allochromasia al·lo·chro·ma·si·a (āl’ō-krō-mā’zē-ə, -zhə)
Change in color of the skin or hair.
Physical Chemistry. pertaining to or having photochemical properties resulting from an impurity or from exposure to radiation. Mineralogy. (of a mineral) having no color in itself but bearing colored impurities.
a geological formation not formed in the region where found and moved to its present location by tectonic forces. Compare (def 3).
not formed in the region where found. Compare (def 4). adjective (of rocks, deposits, etc) found in a place other than where they or their constituents were formed Compare autochthonous (sense 1)
a formal speech, especially one of an incontrovertible or hortatory nature. a pronouncement delivered by the pope to a secret consistory, especially on a matter of policy or of general importance. Historical Examples This allocution calls to mind Spainʼs last struggle with Mexico. The Philippine Islands John Foreman He began with an allocution pitched in […]
allocortex allocortex al·lo·cor·tex (āl’ō-kôr’těks’) n. Any of the regions of the cerebral cortex that have fewer cell layers than the isocortex, especially the olfactory cortex and the hippocampus. Also called heterotypic cortex.