The Collaborative International Dictionary
Teniasis
Taeniasis \T[ae]*ni"a*sis\, n. Also Teniasis \Te*ni"a*sis\ [NL. See T[ae]nia.] (Med.) Ill health due to t[ae]nia, or tapeworms.
Wiktionary
teniasis
n. (alternative form of taeniasis English)