断食 (danjiki) means “fasting” | MotiTan Japanese Dictionary

More examples

宗教上の理由で、断食を続けています。shū kyō jō no ri yū de dan jiki o tsuzu ke te i ma su

I continue fasting for religious reasons.

Refers to a chosen period of abstaining from food, often as part of a religious observance or a health practice.

絶食zesshoku: A period of not eating, especially as part of medical treatment or a medical examination.

宗教上または健康上の理由で、一定の期間食事を取らないこと。shū kyō jō ma ta wa ken kō jō no ri yū de it tei no ki kan shoku ji o to ra na i ko to

The Sino-Japanese word 断食 (danjiki) combines 断 (dan, "to cut off") with 食 (jiki, "food"), giving it the sense of refusing food for a period.

Because 断食 (danjiki) names an intentional practice, it does not normally describe accidentally missing lunch, which is more naturally expressed as 昼食を抜く (chūshoku o nuku).