different between allotroph vs allotrophic

English

allo- +? -troph

allotroph (plural allotrophs)

(rare) Synonym of heterotroph
- 1970, Stephen H. Dole, Habitable Planets for Man, page 142:
  A living thing using only inorganic materials as food, as opposed to heterotrophs, allotrophs, parasites, or saprophytes, which depend on other organisms for nutrition.
- 1978, Israel Journal of Entomology, volumes 12-14, page 138:
  It is possible that at a young age these secondary host plants (allotrophs) have a similar chemistry to that of the primary hosts that is also attractant and palatable for the beetles. It is also possible that the allotrophs are actually phytochemically […]

Allotrophe is rare; indeed, it occurs as a misspelling of allotrope (even in college-level reference works) almost as often as it occurs as asynonym of heterotroph.

allotroph +? -ic

allotrophic (comparative more allotrophic, superlative most allotrophic)

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