1650s, figurative, "state of being 'inflamed,' " from French incandescence, from incandescent (see incandescent). Literal meaning "the condition of glowing from heat" is by 1794.
inbred
inbreeding
Inc.
Inca
incalculable
incandescence
incandescent
incantation
incapable
incapacitate
incapacitation
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