tetrahedron
/ˌtetɹəˈhidɹən/teh-truh-HEE-druhn
/ˌtɛtɹəˈhidɹən/teh-truh-HEE-druhn
Meaningfour-sided (solid)
Common meaning: a four-faced solid
- tetrafourLiddell & Scott, Greek-English Lexicon (1883), p. 1543 · scan
- hedra seat; a base, sideLiddell & Scott, Intermediate Greek-English Lexicon (1889), p. 224 · scan
- onnoun ending (from Latin -o, -onis)
‘four’ + ‘a seat’ → tetrahedron
Journey through time
- tetra — Greek τέσσαρες (τετρα-) “four” (path traced)
- hedr — Greek ἕδρα “a seat; a base, side” (path traced)
- Greekτέσσαρες (τετρα-) + ἕδρα‘four + a seat’
- Englishtetrahedron‘a four-faced solid’ · today
tetra also in: tetralogy
hedr also in: chaircathedralpolyhedron
Sources & notes
Meaning: “Meaning” is the sense that emerges from the word’s roots; “Common meaning” is today’s everyday sense. Both written by us.
Pronunciation
- UK IPA: converted from the US form by rule (unchecked). Respelling: generated.
- No UK recording; the speaker uses your device’s en-GB voice.
- US IPA: CMUdict (BSD-2), converted to IPA by rule. Respelling: generated.
- No US recording; the speaker uses your device’s en-US voice.
Origin: Built on Greek τέσσαρες (τετρα-) ‘four’ + Greek ἕδρα ‘a seat; a base, side’.
Did you know: our wording, based on Liddell & Scott, Intermediate Greek-English Lexicon (1889), entry ἕδρα, p. 224 · dictionary scan
Roots
- τέσσαρες (τετρα-) Greek “four”
- ἕδρα Greek “a seat; a base, side”
Related words
Building blocks are an automatic split · open in app