English

femtoinjection

From femto- + injection.

Proto-Germanic *fimftehun ‘fifteen’

Old Norse fimmtán ‘fifteen’

Danish femten ‘fifteen’

Proto-Indo-European *(H)yeh₁- ‘to throw’

…

Latin iaciō ‘throw, hurl’

Latin iniciō ‘to throw, cast, hurl or place in, on, into,…’

Latin iniectio

Middle French injection

Today it means

noun injection of femtogram amounts, typically into individual cells

Language periods are conventional ranges, not dates for this word.

Etymograph / femtoinjection