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PHILOSOPHICAL
ἀφαίρεσις (ἡ)

ΑΦΑΙΡΕΣΙΣ

LEXARITHMOS 1027

Aphaeresis, a pivotal term in ancient Greek philosophy and mathematics, denotes the act of removal or isolation, both physically and mentally. From the simple "taking away" of an object, it evolved into a fundamental method of thought, where the mind isolates the essential properties of a thing from its accidental ones. Its lexarithmos (1027) suggests a complex unity, reflecting abstraction's capacity to reach the essence.

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Definition

According to the Liddell-Scott-Jones Lexicon, ἀφαίρεσις initially means "taking away, removal" (from ἀφαιρέω, "to take away, remove"). Its primary usage concerned the material removal of objects or persons, such as the subtraction of a part from a whole or the removal of an enemy. However, the word quickly acquired deeper, metaphorical, and technical meanings, particularly in the realms of philosophy and the sciences.

In philosophy, aphaeresis emerged as a central epistemological method. Plato, though not using the term with Aristotle's systematic precision, describes the process by which the soul detaches itself from sensible particulars to grasp the eternal and immutable Forms. Aristotle, in particular, developed abstraction (aphaeresis) as a fundamental cognitive process through which the mind isolates universal forms (eídē) from matter, in order to understand the essence of things. For instance, in the science of geometry, the geometer abstracts from material bodies the properties of weight, color, and hardness, to study their pure quantitative dimensions.

In mathematics, aphaeresis refers to the operation of subtracting numbers or quantities, i.e., the reduction of one number by another. This usage is evident in the works of Euclid and other ancient mathematicians, where subtraction constitutes one of the four basic arithmetic operations. The word also retains meanings related to deprivation, loss, or cutting off, both in literal and metaphorical contexts, underscoring the breadth of its semantic field.

Etymology

aphaeresis ← aphairéō ← apó + hairéō (hair- root)
The word aphaeresis derives from the verb aphairéō, which is a compound of the preposition apó ("from, away from") and the verb hairéō ("to take, grasp, choose"). The root hair- is an Ancient Greek root belonging to the oldest stratum of the language, expressing the idea of taking, seizing, or choosing. The addition of apó- modifies the meaning to "take away, remove."

The root hair- is exceptionally productive in Ancient Greek, generating a rich family of words related to the act of taking, choosing, seizing, or dividing. From this root stem verbs and nouns that describe both physical actions (e.g., the capture of a city) and mental processes (e.g., choice or division of concepts). The semantic evolution of the root reflects the Greek language's capacity to express abstract concepts through concrete actions.

Main Meanings

  1. Physical removal, taking away — The act of removing an object or person from a whole or a place.
  2. Surgical/medical removal — The cutting off or removal of a body part, e.g., a tumor.
  3. Mathematical subtraction — The operation of reducing one number or quantity by another.
  4. Philosophical/logical abstraction — The mental process by which the mind isolates the essential properties of a thing from its accidental ones, or universal forms from matter.
  5. Deprivation, loss — The state of being deprived of or losing something.
  6. Cutting off, interruption — The severance of a relationship or a continuity.
  7. Deviation from truth/correctness — The departure from sound judgment or reality.

Word Family

hair- (root of the verb hairéō, meaning "to take, grasp, choose")

The root hair- is one of the most productive and semantically rich roots in the Ancient Greek language. It expresses the fundamental idea of "taking" or "choosing," which can manifest both physically (e.g., seizure, capture) and mentally (e.g., selection, preference). Through prefixes, this root generates a plethora of words describing actions of removal, division, preference, or destruction, highlighting Greek's ability to construct complex concepts from simple, primal acts.

ἀφαιρέω verb · lex. 1417
The verb from which aphaeresis is derived. It means "to take away, remove, seize." In Homer, it is often used for seizing spoils or persons. In philosophy, it describes the act of mentally isolating properties.
αἵρεσις ἡ · noun · lex. 526
Means "choice, preference," but also "school, sect" (as a chosen doctrine). In Thucydides, it refers to the choice of strategy, while later, in ecclesiastical literature, it acquires the negative meaning of "heretical doctrine."
προαίρεσις ἡ · noun · lex. 776
"Prohairesis," conscious choice or intention, especially moral choice. It is a central term in Aristotle's ethical philosophy (Nicomachean Ethics), describing the deliberate, rational choice that leads to action.
διαιρέω verb · lex. 930
Means "to divide, separate, distinguish." A key verb in logic and philosophy, describing the method of dividing a genus into species, as in Plato (e.g., Sophist) and Aristotle.
διαίρεσις ἡ · noun · lex. 560
"Diairesis," division, distinction. A technical term in philosophy for the logical method of analyzing a whole into parts or a genus into species. In mathematics, the operation of division.
αἱρετός adjective · lex. 686
"Choosable, desirable, preferable." Used to characterize something worthy of choice or preference, often in an ethical or political context (e.g., "hairesis archē" — elected office).
καθαιρέω verb · lex. 946
Means "to pull down, destroy, depose." Used for the capture and destruction of cities, removal from office, or the refutation of arguments.

Philosophical Journey

The concept of aphaeresis, from the simple physical act to the complex philosophical method, permeates Greek thought, evolving and enriching itself over the centuries.

8th-7th C. BCE (Archaic Period)
Homer
The verb aphairéō is already found in Homer with the literal meaning of physical removal or seizure (e.g., "to take away glory" — Iliad, Γ 138).
5th C. BCE (Classical Period)
Thucydides
The word aphaeresis begins to be used in a more abstract context, though not yet with its full philosophical significance. In Thucydides, it might refer to the withdrawal of troops.
4th C. BCE (Plato)
Plato
Plato, in the Republic and elsewhere, describes the process by which the philosopher "abstracts" their mind from sensible things to approach the Forms, laying the groundwork for the later philosophical use of the term.
4th C. BCE (Aristotle)
Aristotle
Aristotle systematizes the concept of abstraction (aphaeresis) as a fundamental epistemological method, especially in his Metaphysics and Analytics, to explain how sciences (e.g., mathematics) study their objects by isolating their properties.
3rd C. BCE (Euclid)
Euclid
In Euclid's Elements, aphaeresis is established as a technical term for the mathematical operation of subtraction, i.e., the reduction of one quantity by another.
Hellenistic & Roman Periods
Neoplatonists
The word continues to be used in both philosophy (Neoplatonists) and mathematics, as well as in medical texts for surgical removals.

In Ancient Texts

The significance of aphaeresis is highlighted through texts that shaped Greek thought, from philosophy to mathematics.

«τὸν γὰρ μαθηματικὸν ἀφαιρεῖν λέγομεν· ἀφαιρεῖ γὰρ πάντα τὰ αἰσθητὰ, οἷον βάρος καὶ κουφότητα καὶ βάθος καὶ πλάτος καὶ μῆκος, πλὴν τοῦ ποσοῦ καὶ τοῦ συνεχούς.»
“For we say that the mathematician abstracts; for he abstracts all sensible qualities, such as weight and lightness and depth and breadth and length, except for quantity and continuity.”
Aristotle, Metaphysics, E 1, 1026a17-19
«Ἐὰν ἀπὸ ἴσων ἴσα ἀφαιρεθῇ, τὰ καταλειπόμενα ἴσα ἐστίν.»
“If equals be subtracted from equals, the remainders are equal.”
Euclid, Elements, Common Notions 3
«καὶ οὕτω δὴ ἀφαιρεῖται ἀπὸ τοῦ αἰσθητοῦ τὸ νοητόν, καὶ ἀπὸ τοῦ νοητοῦ τὸ νοητότερον.»
“And thus the intelligible is abstracted from the sensible, and from the intelligible, the more intelligible.”
Plotinus, Enneads, V 3, 17

Lexarithmic Analysis

The lexarithmos of the word ΑΦΑΙΡΕΣΙΣ is 1027, from the sum of its letter values:

Α = 1
Alpha
Φ = 500
Phi
Α = 1
Alpha
Ι = 10
Iota
Ρ = 100
Rho
Ε = 5
Epsilon
Σ = 200
Sigma
Ι = 10
Iota
Σ = 200
Sigma
= 1027
Total
1 + 500 + 1 + 10 + 100 + 5 + 200 + 10 + 200 = 1027

1027 decomposes into 1000 (hundreds) + 20 (tens) + 7 (units).

The 18 Methods

Applying the 18 traditional lexarithmic methods to the word ΑΦΑΙΡΕΣΙΣ:

MethodResultMeaning
Isopsephy1027Base lexarithmos
Decade Numerology11027 → 1+0+2+7=10 → 1+0=1 — The Monad, the origin, unity, abstraction in its most fundamental form, leading to the reduction to the original, indivisible essence.
Letter Count99 letters — The Ennead, the number of completion, perfection, and spiritual quest, leading to the abstraction of the superfluous and the approximation of truth.
Cumulative7/20/1000Units 7 · Tens 20 · Hundreds 1000
Odd/EvenOddMasculine force
Left/Right HandRightDivine (≥100)
QuotientComparative method
NotarikonA-P-H-A-I-R-E-S-I-S“Abstracting From All Imperfections, Reaching Essential Spiritual Insight”
Grammatical Groups5V · 0S · 4M5 vowels underscore the fluidity and flexibility of thought in abstraction, while 4 mutes denote the stability and precision of the resulting concept.
PalindromesNo
OnomancyComparative
Sphere of DemocritusDivination with lunar day
Zodiacal IsopsephyJupiter ♃ / Scorpio ♏1027 mod 7 = 5 · 1027 mod 12 = 7

Isopsephic Words (1027)

Words from the Liddell-Scott-Jones lexicon sharing the same lexarithmos (1027) as aphaeresis, but stemming from different roots, offer intriguing connections and highlight the numerical complexity of the Greek language.

καθοπλίζω
The verb "kathoplízō" means "to arm fully, equip." While aphaeresis is a process of stripping away and divesting of the superfluous, kathoplízō implies addition and reinforcement, creating an interesting contrast.
συντίθημι
The verb "syntíthēmi" means "to put together, compose, arrange." It represents the opposite process to aphaeresis, as one separates and isolates, while the other unites and creates a whole.
λεξιθηρέω
The verb "lexithēréō" means "to hunt for words, be a word-hunter." This word connects to intellectual pursuit and the precise use of language, a process that often requires abstraction and distinction of concepts.
δυσδιέξοδος
The adjective "dysdiexodos" means "hard to get through, difficult to overcome." Abstraction, as a mental process, can be a demanding and difficult path towards understanding essence.
φρενοάρας
The adjective "phrenoáras" means "lifting the mind, inspiring." Philosophical abstraction, by removing the mind from worldly concerns, can lead to an elevation of the spirit and deeper intellectual insight.

The LSJ lexicon contains a total of 77 words with lexarithmos 1027. For the full catalog and AI semantic filtering, see the interactive tool.

Sources & Bibliography

  • Liddell, H. G., Scott, R., Jones, H. S.A Greek-English Lexicon, with a revised supplement. Oxford: Clarendon Press, 1996.
  • AristotleMetaphysics. Edited by W. D. Ross. Oxford: Clarendon Press, 1924.
  • PlatoRepublic. Edited by John Burnet. Oxford: Clarendon Press, 1903.
  • EuclidElements. Edited by Sir Thomas L. Heath. Cambridge: Cambridge University Press, 1908.
  • PlotinusEnneads. Edited by P. Henry and H.-R. Schwyzer. Paris: Desclée de Brouwer, 1951-1973.
  • Ross, W. D.Aristotle. London: Methuen, 1923.
  • Heath, T. L.A History of Greek Mathematics. Oxford: Clarendon Press, 1921.
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