allegory (a literary, dramatic, or pictorial device in which characters and events stand for abstract ideas, principles, or forces, so that the literal sense has or suggests a parallel, deeper symbolic sense)
allelomorph (an allele)
allelopathy (the inhibition of growth in one species of plants by chemicals produced by another species)
allergy (an abnormally high sensitivity to certain substances, such as pollens, foods, or microorganisms. Common indications of allergy may include sneezing, itching, and skin rashes)
allogeneic (being genetically different although belonging to or obtained from the same species)
allomorph (any of the variant forms of a morpheme)
allonym (the name of a person, usually a historical person, assumed by a writer)
allopathy (a method of treating disease with remedies that produce effects different from those caused by the disease itself)
allopatric (occurring in separate, nonoverlapping geographic areas. Often used of populations of related organisms unable to crossbreed because of geographic separation.)
allophane (an amorphous, translucent, variously colored mineral, essentially hydrous aluminum silicate)
allophone (a predictable phonetic variant of a phoneme)
isallobar (a line on a weather map connecting places having equal changes in atmospheric pressure within a given period of time)
morphallaxis (the regeneration of a body part by means of structural or cellular reorganization with only limited production of new cells, observed primarily in invertebrate organisms, such as certain lobsters)
parallax (an apparent change in the direction of an object, caused by a change in observational position that provides a new line of sight)
parallel (being an equal distance apart everywhere)
trophallaxis (mutual exchange of food between adults and larvae of certain social insects such as bees or wasps)
Definitions are taken from:
The American Heritage® Dictionary of the English Language, Third Edition copyright © 1992 by Houghton Mifflin Company.
Electronic version licensed from InfoSoft International, Inc. All rights reserved.
Webster's Third New International Dictionary, Unabridged. Merriam-Webster, 2002.
https://unabridged.merriam-webster.com (30 Sep. 2006).
English-Word Information: Word Info about English Vocabulary (wordinfo.info).