内ない生せい

な

い

せ

い

Meanings

endogeny

Technical term used in biology, geology, and related fields to describe processes originating from within an organism, cell, or system. Not common in everyday conversation.

内ない生せいのリズムは、外がい部ぶの刺し激げきがなくても維い持じされる。
Endogenous rhythms are maintained even without external stimuli.
この植しょく物ぶつは内ない生せいのホルモンによって成せい長ちょうが調ちょう節せつされている。
The growth of this plant is regulated by endogenous hormones.

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Kanji

内inside, within, between
生life, genuine, birth

Related words

外がい生せい
外生 means 'exogeny' or 'exogenous', referring to processes originating from outside. 内生 is its antonym.
内ない因いん性せい
内因性 is a more common term for 'endogenous' in medical and biological contexts, often used as an adjective (e.g., 内因性の). 内生 is a noun and tends to appear in compound terms.

Word family

Etymology

Compound of 内 (nai, 'inside') and 生 (sei, 'life, birth, growth'), literally 'inner growth'. The exact historical derivation is uncertain, but the term is used in modern technical vocabulary as a translation of Western scientific concepts.