LATIN DICTIONARYLexicon Latīnum
nounthird declension

māter lēctiōnis

māter lēctiōnis f (genitive mātris lēctiōnis)
Ecclesiastical[ˈmaː.ter lek.t͡siˈɔː.nis]

Meaning

  1. New Latinmater lectionis
    Si quis hinc concludere vellet, usum Matrum lectionis tunc nondum fuisse, annon exploderetur à Revelatore?If one were to conclude from this that matres lectionis were not yet in use at this time, would this not be exploded by the Revelator?1648, Johannes Buxtorf II, Tractatus de Punctorum, Vocalium, et Accentuum, in Libris Veteris Testamenti Hebraicis […] , page 110:

Declension

declension
formsingularplural
nominativemāter lēctiōnismātrēs lēctiōnis
genitivemātris lēctiōnismātrum lēctiōnis
dativemātrī lēctiōnismātribus lēctiōnis
accusativemātrem lēctiōnismātrēs lēctiōnis
ablativemātre lēctiōnismātribus lēctiōnis
vocativemāter lēctiōnismātrēs lēctiōnis

Origins

Literally, “mother of reading”. Calque of Medieval Hebrew אֵם קְרִיאָה (ʾēm qərîʾā).

Quick answers

What does māter lēctiōnis mean in Latin?
māter lēctiōnis, a noun, means “mater lectionis”.
What is the genitive of māter lēctiōnis?
The genitive singular is mātris lēctiōnis. māter lēctiōnis is third declension.