MERISIS Meaning of MERISIS in English /mer"euh sis/ , n. Biol.growth, esp. growth resulting from cell division. Cf. auxesis . [ 1935-40; meri- (comb. form of merís part, portion) + -SIS ] Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012