Third-person singular simple present indicative form of fibrose

(biochemistry) Any of a group of acylated depsipeptides present in the pathogen Xenorhabdus

(UK dialectal) Breath. / (UK dialectal) Sea smoke; steam fog.

(organic chemistry) The nitrosamine (CH₃-CH₂)₂N-N=O, which is both carcinogenic and mutagenic.