| a. | 1. | (Bot.) derived from or originating outside; pertaining to, or having the character of, an exogen; - the opposite of | |||
| 2. | (Bot.) Growing by addition to the exterior; growing by addition of a new external layer of cells on the surface just beneath the bark; - of plants. | ||||
| 3. | (Anat.) Growing from previously ossified parts; - opposed to | ||||
| 4. | (Med.) caused by factors from outside the body, rather than from an abnormality of internal functions; - of illness. | ||||
| 5. | (Biol., Biochem.) not synthesized within the organism; absorbed or assimilated from outside the organism.
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| Adj. | 1. | exogenous - derived or originating externally Synonyms: exogenic Antonyms: endogenic, endogenous - derived or originating internally |