Friday, July 28, 2017

"tertiary : Of third rank or order; subsequent. (chemistry) Possessing some quality in the third..."

“tertiary : Of third rank or order; subsequent.
(chemistry) Possessing some quality in the third degree; especially having been subjected to the substitution of three atoms or radicals.
(ornithology) Of quills: growing on the innermost joint of a bird’s wing; tertial.”

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