στερεός

• στερρός (sterrhós) — Attic

From Proto-Indo-European *ster- (“strong, steady”), the same root of Old English starian (“to stare”), Proto-Germanic *staraz (“stiff”), στεῖρος (steîros, “barren, sterile”), Tocharian B ścīre (“hard; harsh (of words)”). See also στηρῐ́ζω (stērízō, “to support”).^[1]

στερεός • (stereós) m (feminine στερεᾱ́, neuter στερεόν); first/second declension

1. firm, solid, rigid

   Synonym: στρῐφνός (striphnós)

2. standard, of full value (of money)
3. (figuratively) stiff, stubborn
4. hard, stubborn, cruel
5. solid, cubic (of bodies and quantities)

• Greek: στερεός (stereós)
• → English: stereo-

• “στερεός”, in Liddell & Scott (1940) A Greek–English Lexicon, Oxford: Clarendon Press
• “στερεός”, in Liddell & Scott (1889) An Intermediate Greek–English Lexicon, New York: Harper & Brothers
• στερεός in Bailly, Anatole (1935) Le Grand Bailly: Dictionnaire grec-français, Paris: Hachette
• “στερεός”, in ΛΟΓΕΙΟΝ Dictionaries for Ancient Greek and Latin (in English, French, Spanish, German, Dutch and Chinese), University of Chicago, since 2011

• (more colloquial): στέρεος (stéreos)

From Ancient Greek στερεός (stereós), from Proto-Indo-European *ster- (“stiff”). Cognate with Latin stultus, stolidus, sterilis, strēnuus, stīria. See also Old English steorfan (“to die”), Latin torpeō, Lithuanian tirpstu (“to become rigid”), and Old Church Slavonic трупети (trupeti).

στερεός • (stereós) m (feminine στερεή or στερεά, neuter στερεό)

1. firm, solid (of foundations, bodies etc)

• στερεά γωνία f (stereá gonía, “solid angle”)