Nick Nicholas proposes that for Graeco-Latin nouns, Lojban follow the lead of Latino sine Flexione (and to a lesser extent Interlingua), and borrow words from Latin in the ablative singular case.
Advantages:
Disadvantages:
Rules of thumb (Latin has exceptions and whatnot, but this will do in the general case.)
Nominative Ablative
-a -a
-us -o
-us -u (Very rare; virus is the only good example)
-us -ore, -ere (Not rare enough)
-um -o
-on -o
-es -e
-o -one
-er -re
-er -ero (rarer)
-is -e
-x -ce, -ge, or -cte
-Cs -Ce (C for consonant)
-C -Ce (C for consonant)
-u -u
If you know the genitive of the noun (and Latin dictionaries always list the genitive next to the nominative, precisely because Latin gets so wacky), the procedure is much simpler:
-ae -> a, -i -> -o, -us -> -u, -ei -> -e, -is -> -e
Examples:
For verbs, the infinitive is as good a form to borrow as any.
See also Transliterating Graeco-Latin
On second thought, don't: See The Complete Lojban Language, Chapter 4.8.
Bear in mind, however, that Church Latin is to be preferred to Classical Latin, because it is the Church Latin forms that have achieved scientific internationalisation. In other words, verbum, not uerbum, acer, not aker, and trajectorium, not traiectorium.
As a supplement thereto, oe tends to be treated in Modern European languages as a front, rather than a back vowel. Thus, co'elakanto for C(o)elacanth, not ko'elokanto.
I'd have thought that most words from classical Latin could be translated into Lojban by lujvo rather than borrowed as the basis for fuhivla. Or is the idea that Lojban will be like, say, English, with many near-synonym pairs, one member of which is native and the other borrowed from Greek/Latin? (mi'e And)
I have in mind explicitly things like Linnaean terms, and some scientific terminology - nominal-like entities. Because the place structures of fu'ivla are vague, I anticipate Lojbanists will much prefer lujvo in any case, and only use fu'ivla where the lujvo is unworkable. Thus, for example, I don't expect introduktione would really be used as a fu'ivla mi'e nitcion