trismoid

tris·moid

(triz'moyd),
1. Resembling trismus.
2. Trismus nascentium, formerly regarded as a distinct variety due to pressure on the occiput during birth.
[trismus + G. eidos, resemblance]

trismoid

(trĭz′moyd) [Gr. trismos, grating, + eidos, form, shape]
1. Of the nature of trismus.
2. A form of trismus nascentium; once thought to be due to pressure on the occiput during delivery.