What is the meaning of Apologia?

A written defense of a position or belief.

apologia

confession, disclosure of one's sins

apology (formal justification, defence)

apology, apologia

a defense, apology

apologia”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press

apology (defence of some belief)

apology (formal justification, defence)

endorsement, defence, commendation

Source: wiktionary.org