Alternative spelling of semiotician

(mineralogy) A chlorite that contains mostly ferric iron rather than ferrous iron. Leptochlorites are typically richer in trivalent ions relative to silicon and divalent ions.

A foul-smelling diamine produced by protein hydrolysis during putrefaction of animal tissue. Cadaverine is a toxic diamine with the formula NH₂(CH₂)₅NH₂.

(literally) Too implausible to be credible; beyond belief; unbelievable. / (figuratively) Amazing; astonishing; awe-inspiring. / (figuratively) Marvellous; profoundly affecting; wonderful.