[se.pal] n [NL sepalum, fr. sep- (irreg. fr. Gk skepe covering) + -alum (as in petalum petal)] (1821): one of the modified leaves comprising a calyx--see flower illustration
SEPAL
Meaning of SEPAL in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012