ameristic
adjective
am·er·is·tic
¦amə¦ristik,
¦āˌme¦r-
: undifferentiated —used of certain ferns having the prothallia not fully developed and lacking in meristematic tissue thus failing to produce archegonia
Word History
Etymology
Greek ameristos undivided (from a- a- entry 2 + meristos divided) + English -ic
First Known Use
1879, in the meaning defined above