Where does “مناستر” come from?

مناستر (Ottoman Turkish) comes from Greek μοναστήρι, from Ancient Greek μοναστήριον, from Ancient Greek μόνος, from Ancient Greek σπέρμα, from Proto-Hellenic *spérmə.

Ancestry of “مناستر”, step by step

Step	Language	Word	Meaning
1	Greek	μοναστήρι	An abbey, monastery, convent, cloister
2	Ancient Greek	μοναστήριον	solitary dwelling, hermit's cell; monastery
3	Ancient Greek	μόνος	alone, forsaken, solitary; only; unique
4	Ancient Greek	σπέρμα	seed; semen, sperm; seed-time, sowing
5	Proto-Hellenic	*spérmə	—

Every word from Proto-Hellenic *spérmə →