ˈstemə noun
( plural stemma·ta -məd.ə ; also stemmas )
Etymology: New Latin stemmat-, stemma, from Latin, garland, wreath, pedigree (from the garlands placed on ancestral images), from Greek, garland, wreath, from stephein to crown, enwreathe
1.
a.
(1) : one of the simple eyes of an insect : ocellus
(2) : a facet of a compound eye of an arthropod
b. : a tubercle on which an antenna is borne
2.
a. : a scroll (as among the ancient Romans) containing a list of family names with indication of genealogical or other relations : family tree , pedigree
b. : a tree showing the relationships of the manuscripts of a literary work