TETRAPLOID Meaning of TETRAPLOID in English [tet.ra.ploid] adj [ISV] (1912): having or being a chromosome number four times the monoploid number "a ~ cell" -- tet.ra.ploi.dy n [2]tetraploid n (1921): a tetraploid individual Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012