Meaning of OPTIMUM in English

OPTIMUM

[op.ti.mum] n, pl -ma also -mums [L] (1879) 1: the amount or degree of something that is most favorable to some end; esp: the most favorable condition for the growth and reproduction of an organism

2: greatest degree attained or attainable under implied or specified conditions -- optimum adj

Merriam-Webster English vocab.      Английский словарь Merriam Webster.