Despite my best effort, I cannot seem to find any use of this word anywhere outside of dictionaries. Even the TLFi only manages to describe it via its appearances in dictionaries (compare the equally technical and also fairly rare abarticulaire). Circeus 03:26, 3 June 2009 (UTC)
I actually never knew this! You're right, I can't find anything outside of dictionaries but it's attestable in a lot of notable dictionaries. Sort of seems odd to delete it, but I don't want to say keep either, so I'll say I don't have a clue. Mglovesfun 22:03, 3 June 2009 (UTC)
Oh, there seems to be quite a few more of these than we'd like to admit. Right after this I came across ablégation, which is in a similar situation. It's originally given as a roman legal term (from ablegatio), but whether there ever was a right of the paterfamilias to banish a family member looks a but dubious to me (and it's only found in a few generic encyclopedias/dictionaries, not in any actual antiquity-related works...), then it became the "status of being an ablegate", which is even more strange word formation to me Circeus 02:28, 4 June 2009 (UTC)
4 uses found in Google Books, from 1889 to 2008. Fairly rare indeed, but the word does exist! abiétine is also used as a noun (it's much less rare as a noun).
Chimie, inorganique et organique; botanique; zoologie: Notes servant à la préparation de l'examen du premier doctorat, de Lewis Nicholas Worthington - 1889 - 438 pages : (...) colophane) est composée d'une résine neutre abiétine et plusieurs résines acides : l'acide (...)
Khudozhestvennyi︠a︡ sokrovishcha Rossīi, Alexandre Benois, Adrian Viktorovich Prakhov, Imperatorskoe obshchestvo pooshchrenīi︠a︡ khudozhestv (Russia) - 1905 : Peinture sur une planche de bois (abiétin?) d'une extrême finesse (0,08 m.).
Revue de mycologie - Page 125, de Laboratoire de cryptogamie (Muséum national d'histoire naturelle) - 1953 : Chanterelles abiétines de montagne, à la Vespérale.
La pierre à boire - Page 38, de Gérard Laplace - 2008 - 279 pages : Le premier, il pleut sur les aspérités abiétines sans discontinuer.