definition of
stemma

[1] #1 stemma n. a tree diagram showing a reconstruction of the transmission of manuscripts of a literary work. wn

[2] #2 stemma n. [lineage, line, line of descent, descent, bloodline, blood line, blood, pedigree, ancestry, origin, parentage, stock] the descendants of one individual; "his entire lineage has been warriors". wn

[3] #3 stemma n. [simple eye, ocellus] an eye having a single lens. wn