Old biological Synonyms

Definitions for Old

(adjective) being of advanced years and especially past middle age
(adjective) dating or surviving from the distant past
(adjective) having been such at some previous time

OB abbreviation

OB is an abbreviation for Old Biological

What does OB stand for?

OB stands for "Old Biological"

Biological replaced

old principal

Definitions for Biological

(adjective) being such by blood and not by adoption or marriage
(adjective) pertaining to biology or to life and living things
(adjective) of parents and children; related by blood