There are interesting sites out there that list antiquated chemical terms. One apparently authoritative site lists 18th Century chemical terms (compiled by Jon Eklund of Smithsonian Studies in History and Technology). 

Some terms seem to remain quite useful, some are hopelessly irrelevant, and others are just odd.  Naturally, I am attracted to the odd words. Have a look for yourself. Here are a few good ones copied verbatum from early in the alphabet-

Cohobation –Repeated distillations, or any cyclic process in which a liquid is vaporized and condensed as, for example, in refluxing.
Cucurbit – The lower part of an alembic. Shorter, more squat and ovoid than a matrass.
Decrepitation – Rapid physical decomposition of some crystals when heated. Characterized by a crackling noise.
Dephlegmation – To remove water from a solution, usually one of an acid or alcohol. There is a sense of purifying about the term, as opposed to simple concentration.
Desquamation – The process of removing scaly crusts which form on a surface.
Dulcification – Any process in which a caustic substance is rendered less corrosive.
Empyreumatic – Tasting or smelling or burnt organic matter.
Exalt – To make more spiritous, volatile, or generally more active; activate.

I wonder if any of these would get through the peer review process if one were to try to use them in a procedure submitted for publication? Perhaps if Roald Hoffmann used them, I suppose.

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