• Exogen Definition & Synonyms

  1. (n.) A plant belonging to one of the greater part of the vegetable kingdom, and which the plants are characterized by having c wood bark, and pith, the wood forming a layer between the other two, and increasing, if at all, by the animal addition of a new layer to the outside next to the bark. The leaves are commonly netted-veined, and the number of cotyledons is two, or, very rarely, several in a whorl. Cf. Endogen.

• Exogenetic Definition & Synonyms

  1. (a.) Arising or growing from without; exogenous.

• Exogenous Definition & Synonyms

  1. (a.) Pertaining to, or having the character of, an exogen; -- the opposite of endogenous.
  2. (a.) Growing by addition to the exterior.
  3. (a.) Growing from previously ossified parts; -- opposed to autogenous.