noun
also en·gramme ˈenˌgram, ˈeŋˌg-
( -s )
Etymology: International Scientific Vocabulary en- (II) + -gram; originally formed as German engramm
: a memory trace ; specifically : a protoplasmic change in neural tissue hypothesized to account for the persistence of memory
• en·gram·mic (ˈ) ̷ ̷|gramik adjective