IPA: /ˌɛk.splænˈteɪ.ʃən/
KK: /ɛkˌsplænˈteɪʃən/
The process of removing a plant or tissue from its original environment for study or cultivation.
The explantation of the tissue was necessary for the research project.
Explantation → It is formed from "ex-" (meaning out of or from) and "plantare" (meaning to plant). The word refers to the act of removing a plant from its original place, hence the idea of taking it out or from its location.
Think of 'taking out' ('ex-') a plant ('plantare') from where it was originally placed.