[al.ka.loid] n (ca. 1831): any of numerous usu. colorless, complex, and bitter organic bases (as morphine or codeine) containing nitrogen and usu. oxygen that occur esp. in seed plants -- al.ka.loi.dal adj
ALKALOID
Meaning of ALKALOID in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012