ΣΕΛΗΝΗ (selene) — Lexarithmos 301 · Etymology, Meanings

Definition

According to the Liddell-Scott-Jones Lexicon, σελήνη (selēnē, ἡ) primarily denotes "the moon," the celestial body that orbits the Earth and illuminates the night. Its name derives from σέλας (selas), meaning "gleam, light." The moon was central to ancient Greek life, influencing agriculture, fishing, and the determination of time through its lunar cycles.

Beyond its cosmic identity, Selene was personified as a deity, the goddess Selene, daughter of Hyperion and Theia, sister of Helios and Eos. She was often identified with Artemis and Hecate, underscoring her connection to hunting, magic, and the nocturnal realms. Her worship was widespread, with sanctuaries and rituals dedicated to her.

In philosophical and scientific discourse, the moon became an object of intense study. Anaxagoras was among the first to propose that the moon does not emit its own light but reflects the light of the sun, a revolutionary idea for its time. Astronomers such as Meton and Hipparchus studied its movements to develop calendars and predict eclipses, contributing significantly to early astronomy.

Its influence extended to popular culture, where it was associated with phenomena such as "lunacy" (σεληνιασμός), a condition attributed to the moon's influence and even described in the New Testament. Symbolically, the moon represented changeability, cyclical renewal, and transient beauty, owing to its constantly shifting phases.

Etymology

σελήνη ← σέλας (light, gleam) ← PIE root *swel- (to shine, burn)

The word "σελήνη" (selēnē) originates from the ancient Greek noun "σέλας" (selas, τό), meaning "light, gleam, radiance, flame." This connection highlights the moon's primary characteristic as a source of light, albeit reflected. The root traces back to the Proto-Indo-European *swel-, which is related to the concept of "to shine" or "to burn," from which other words denoting light and heat, such as "ἥλιος" (hēlios, sun, via the root *sawel-), also derive.

Cognate words include "σέλας" (light, gleam), "σεληνιακός" (lunar, pertaining to the moon), "νεοσέληνος" (new moon), and "πανσέληνος" (full moon). The PIE root *swel- has distant cognates in other Indo-European languages related to the sun and light, such as the Latin "sol" and the English "sun."

Main Meanings

The celestial body, Earth's satellite — The primary meaning, referring to the moon as a heavenly body that illuminates the night. (Plato, Timaeus 38c)
The goddess Selene — The personification of the moon as a deity, daughter of Hyperion, often identified with Artemis. (Hesiod, Theogony 371)
Moonlight, lunar light — A metaphorical use for the light emitted by the moon, especially at night. (Euripides, Phoenissae 175)
Lunar month — The period of time corresponding to a complete cycle of the moon's phases, approximately 29.5 days. (Thucydides, History of the Peloponnesian War 2.28)
Metaphorical: changeability, transience — Due to its constantly changing phases, the moon was used to symbolize alteration and the ephemeral nature of things.
Lunacy, moon-induced influence on behavior — The belief that the moon's phases affect human behavior, leading to mental disorders or illnesses. (New Testament, Matthew 4:24)

Word Family

sel- (root of σέλας, meaning "to shine, gleam")

The root "sel-" originates from the Proto-Indo-European *swel-, meaning "to shine, burn." In ancient Greek, this root gave rise to a family of words related to light, brilliance, and, specifically, the light of the moon. Selene, as the celestial body that reflects the sun's light, perfectly embodies this concept of "reflected brilliance." Members of this family describe both the moon itself and the phenomena, qualities, and effects associated with it, from its light to its phases and its supposed influences on humans.

σέλας τό · noun · lex. 436

The original noun from which "σελήνη" derives. It means "light, gleam, radiance, flame." It is often used in Homeric poetry to describe the gleam of weapons or gods. It represents the fundamental concept of brightness inherited by the moon.

σεληνιακός adjective · lex. 594

Meaning "pertaining to the moon" or "lunar." It is used to describe anything originating from, belonging to, or influenced by the moon, such as the "lunar cycle" or "lunar eclipses." (Plato, Laws 821c)

νεοσέληνος ἡ · noun · lex. 688

The "new moon," the first appearance of the moon after conjunction with the sun. It was significant for determining the beginnings of months in ancient Greek calendars and for religious ceremonies. (Herodotus, Histories 6.57)

πανσέληνος ἡ · noun · lex. 694

The "full moon," the phase of the moon when its entire disk is illuminated. It is associated with fullness, culmination, and often with folk beliefs and rituals. (Aristotle, On the Parts of Animals 681a)

σεληνιάζομαι verb · lex. 432

Meaning "to be moonstruck" or "to suffer from lunacy," i.e., to be negatively affected by the moon, especially with mental disorders or epileptic seizures. The word implies the belief in the moon's influence on human health. (New Testament, Matthew 4:24)

σεληνόφως τό · noun · lex. 1863

The "moonlight." A compound word that directly describes the light emitted by the moon, emphasizing its role as a source of illumination at night. (Plutarch, On the Face in the Moon 920f)

σεληνοειδής adjective · lex. 590

Meaning "moon-shaped" or "resembling the moon." It is used to describe objects or forms that have the curvature or shape of the moon, such as a crescent. (Ptolemy, Almagest 1.3)

Philosophical Journey

Selene, as the most visible celestial body after the Sun, has played a central role in human history, from primordial worship to scientific observation.

Prehistoric/Mycenaean

Primordial Worship

Early evidence of moon worship as a deity of fertility and time, often linked to Mother Earth and the seasons.

8th-6th C. BCE

Homeric/Archaic Period

References to the moon as a celestial body and as the goddess Selene in the epic poetry of Homer and Hesiod, where she is described as the daughter of the Titans.

5th C. BCE

Presocratic Philosophers

Anaxagoras posits the revolutionary theory that the moon has no light of its own but reflects the sun's light, laying the groundwork for scientific astronomy.

4th C. BCE

Classical Athens

The moon is observed for calendar determination (e.g., Meton's cycle). Plato and Aristotle integrate the moon into their cosmological systems, as part of the sublunary world.

3rd-1st C. BCE

Hellenistic Period

Astronomers like Hipparchus and Ptolemy conduct detailed observations of the moon's movements, calculating distances and predicting eclipses with great accuracy.

1st C. CE

New Testament

The moon is mentioned in eschatological signs and is associated with "lunacy" (σεληνιασμός), a condition attributed to the moon's influence on people.

In Ancient Texts

Three significant passages highlighting the diverse meanings of Selene in the ancient Greek world:

«ἀλλ' ὅτε δὴ τρίτον ἦμαρ ἐϋπλόκαμος φάος ἦγεν, / καὶ τότε δὴ Σελήνη μέγαν κύκλον ἐπλήρου.»

But when the third day brought the light with lovely tresses, / and then Selene filled her great orb.

Homer, Odyssey E 123-124

«ὦ παρθένε, Σελήνη, νυκτὸς ὄμμα, / ἥτις διπλοῦν ἅρμα διφρεύεις.»

O maiden, Selene, eye of night, / you who drive a double chariot.

Euripides, Phoenissae 175-176

«τὸν δὲ δὴ Σελήνης φῶς οὐκ ἔστιν ἴδιον, ἀλλ' ἀπὸ Ἡλίου ἔχει.»

The light of the Moon is not its own, but it has it from the Sun.

Anaxagoras, DK 59 A 42 (from Plutarch, On the Face in the Moon)

Lexarithmic Analysis

The lexarithmos of the word ΣΕΛΗΝΗ is 301, from the sum of its letter values:

Σ = 200

Sigma

Ε = 5

Epsilon

Λ = 30

Lambda

Η = 8

Eta

Ν = 50

Nu

Η = 8

Eta

= 301

Total

200 + 5 + 30 + 8 + 50 + 8 = 301

301 decomposes into 300 (hundreds) + 1 (units).

The 18 Methods

Applying the 18 traditional lexarithmic methods to the word ΣΕΛΗΝΗ:

Method	Result	Meaning
Isopsephy	301	Base lexarithmos
Decade Numerology	4	3+0+1=4 — Quaternity, the number of stability, order, and completion, reflecting the cyclical order of the moon's phases.
Letter Count	6	6 letters — Hexad, the number of harmony, balance, and creation, associated with the beauty and influence of the moon.
Cumulative	1/0/300	Units 1 · Tens 0 · Hundreds 300
Odd/Even	Odd	Masculine force
Left/Right Hand	Right	Divine (≥100)
Quotient	—	Comparative method
Notarikon	S-E-L-E-N-E	Shines, Emitting Light, Ever Nurturing Earth (interpretive)
Grammatical Groups	3V · 3C · 0D	3 vowels (E, H, H), 3 consonants (S, L, N), 0 diphthongs.
Palindromes	No
Onomancy	—	Comparative
Sphere of Democritus	—	Divination with lunar day
Zodiacal Isopsephy	Moon ☽ / Taurus ♉	301 mod 7 = 0 · 301 mod 12 = 1

Isopsephic Words (301)

Words from the Liddell-Scott-Jones Lexicon with the same lexarithmos (301) as "σελήνη," but a different root:

πρόβημα

the problem, obstacle, that which is put forward — a concept implying difficulty or challenge, in contrast to the luminous constancy of the moon.

γληνίς

the pupil of the eye, a mirror — a word connected with sight and reflection, just as the moon reflects light.

δειλίασμα

cowardice, fear — a human weakness that stands in contrast to the majesty of the celestial body.

πρόαν

before, formerly (adverb) — denotes the past, whereas the moon is a continuous phenomenon, albeit with cyclical changes.

ἐκμείρομαι

to be deprived of, to miss — a concept of loss or lack, in contrast to the fullness of the full moon.

ἐξείρομαι

to ask, to inquire, to examine — an act of seeking knowledge, just as ancient astronomers examined the moon.

The LSJ lexicon contains a total of 49 words with lexarithmos 301. 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, Oxford University Press, 9th ed., 1940.
Hesiod — Theogony.
Homer — Odyssey.
Euripides — Phoenissae.
Plato — Timaeus, Laws.
Aristotle — On the Parts of Animals.
Thucydides — History of the Peloponnesian War.
New Testament — Gospel of Matthew.
Plutarch — On the Face in the Moon.
Diels, H., Kranz, W. — Die Fragmente der Vorsokratiker (DK).