different between tetra vs tetrad

English

Etymology

From translingual Tetragonopterus, an obsolete genus that included these fish.

Noun

tetra (plural tetras)

1. Any of numerous species of small South American freshwater fish of the family Characidae, popular in home aquariums.

Derived terms

Translations

Anagrams

• Ratte, Treat, atter, ratte, tater, teart, treat

Finnish

Pronunciation

• IPA^(key): /?tetr?/, [?t?e?t?r?]
• Rhymes: -etr?
• Syllabification: tet?ra

Etymology 1

< trade name Tetra Pak

Pronunciation

• IPA^(key): /?tetr?/, [?t?e?t?r?]
• Rhymes: -etr?
• Syllabification: tet?ra

Noun

tetra

1. Tetra Pak (type of container)

Declension

Synonyms

• tetrapakkaus

Usage notes

• Often used as headword in a compound term, with a modifier that specifies the content, e.g. mehutetra (“Tetra Pak of juice”).

Etymology 2

From English tetra, from translingual Tetragonopterus.

Noun

tetra

1. tetra (fish of the family Characidae, commonly kept as aquarium fish)

Declension

Anagrams

• terat

Italian

Adjective

tetra

1. feminine singular of tetro

Noun

tetra m (invariable)

1. tetra

Anagrams

• retta

Latin

Adjective

t?tra

1. nominative feminine singular of t?ter
2. nominative neuter plural of t?ter
3. accusative neuter plural of t?ter
4. vocative feminine singular of t?ter
5. vocative neuter plural of t?ter

Adjective

t?tr?

1. ablative feminine singular of t?ter

References

• tetra in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)

English

Etymology

From Ancient Greek ?????? (tetrás), analysable as tetr- +? -ad.

Pronunciation

• (Received Pronunciation, General American) IPA^(key): /?t?t?æd/
• Hyphenation: tet?rad

Noun

tetrad (plural tetrads)

1. A group of four things.

   Synonyms: foursome, quartet; see also Thesaurus:quartet
2. (biology) Two pairs of sister chromatids (a dyad pair) aligned in a certain way and often on the equatorial plane during the meiosis process.
3. (biology) A group of four haploid and immature pollen grains in tetrahedral fashion produced by meiotic microsporogenesis.
4. (cartography) A unit of land area of two by two (that is, four) square kilometres.
5. (chemistry) A tetravalent atom or radical.
6. (mathematics) A group of four basis vectors for a four-dimensional manifold in differential geometry.

Coordinate terms

• (group) monad, duad/dyad, triad, tetrad, pentad, hexad, heptad, octad, ennead/nonad, decad/decade, hendecad, dodecad/duodecade, chiliad

Derived terms

• tetradic

Translations

Anagrams

• ratted, tarted