発情期 はつじょうき Meanings Noun mating season; estrus (oestrus); estrum; the rut Kanji 発 emit. Read as ハツ. 情 feeling. Read as ジョウ. 期 period. Read as キ. Example sentences 猫は年に2・3回ほど発情期を迎えます。Cats go into heat two or three times a year. Words containing 発情期 年中発情期 (ねんちゅうはつじょうき) year-round mating season Jinuma: Japanese Dictionary · Word lists