noun
Mass; Catholic Mass
Refers specifically to the Catholic Eucharistic liturgy. The word is a direct loan from Latin 'missa'.
from Latin missa
日曜日に教会でミサに参加した。
I attended Mass at church on Sunday.
ミサの最中は静かに祈りを捧げる。
During Mass, one prays quietly.
礼拝 is a general term for religious worship or service, used across Christian denominations and other religions, while ミサ specifically denotes the Catholic Mass.
Borrowed from Latin 'missa', likely via Portuguese or early Christian missionary contact. The ateji spelling 弥撒 is a phonetic rendering.