sym-
Multiple Entries:sym- syn-
Concise Oxford English Dictionary © 2008 Oxford University Press:
sym-/sɪm/
▶prefix variant spelling of syn-. assimilated before b, m, p (as in symbiosis, symmetry, symphysis).
Concise Oxford English Dictionary © 2008 Oxford University Press:
syn- /sɪn/ (also sym- before b, m, and p; syl- before l)
▶prefix united; acting together: synchrony.
– origin from Gk sun ‘with’.
'sym-' also found in these Oxford entries:

