Word: tetrad
Part of speech: Noun
Syllables: tet
rad
Definition: A unit of land area of two by two (that is, four) square kilometres.
Morphemes:
Affix: tetr-
Language: en
PoS: Prefix
Meaning: Form of tetra- used before a vowel.
Affix: -ad
Language: en
PoS: Suffix
Meaning: a unit or set (especially of a specified number)
Etymology Compounds: Affix: -άς
Language: grc
Decoded: -as
PoS: Suffix
Meaning: Forms abstract or collective nouns of number from numerals.