protomorphic

a. 原始形式的,[生]原形态的

释义与例句

adj.
  1. 1.

    Having the most primitive character; in the earliest form of stage.

    1864-1898, Herbert Spencer, Principles of Biology That is to say , the contact of this deep - seated tissue with outer agencies, produces in it some approach towards that composition which we find universally characterizes outer - tissue - a protomorphic layer which differentiates in opposite directions.

词源

From proto- + -morphic.

来源：wiktionary