Kyūjitai form of 過労死: death from overwork

(ornithology) eyestripe, eyeline (stripe on a bird's face)

(chemistry) fine chemical

chemical equivalent

stoichiometry

(neuroscience) chemotransmitter

"chemical flavoring", any umami flavoring agent, usually MSG

“a hundred days of sermonizing, one fart” → a metaphor for how something that one has put great effort into can come to nothing after even a slight mistake, much as a hundred days of serious spiritual study can be lost to the winds

Obsolete spelling of テキサス (Tekisasu, “Texas (a state of the United States)”)