ひつどく
hitsudoku
必読 JN1
required reading
ひつどく
hitsudoku
必読 JN1
being worth reading / being a must-read
ひつにゅう
hitsunyuu
泌乳 JN1
secretion of milk
ひつにゅうしげきほるもん
hitsunyuushigekihorumon
泌乳刺激ホルモン JN1
lactogenic hormone
ひつにょうき
hitsunyouki
泌尿器 JN1
the urinary organs
ひつばつ
hitsubatsu
必罰 JN1
unescapable penalty / inevitable punishment / unescapability of punishment
ひつぼく
hitsuboku
筆墨 JN1
writings in ink / writings with a fude in sumi
ひつもんひっとう
hitsumonhittou
筆問筆答 JN1
written exchange of questions and answers
ひつよう
hitsuyou
必用 JN1
must use
ひつようじゅうぶんじょうけん
hitsuyoujuubunjouken
必要十分条件 JN1
necessary and sufficient condition