-mas
combining form in countable noun
indicating a Christian festival
⇒
Christmas
⇒
Michaelmas
Origin
from Mass-masa combining form meaning 'mass' in the names of certain holidays and Christian feasts, as Michaelmas.
[from mass2]-mas
Suffix
- A holiday, sacred day.
Etymology
mass, from Old English masse, messe. Confer the Icelandic messa.
Derived terms
English words suffixed with -mas