fissi-, fiss-, fissur-

(Latin: split, cleave, cut into, cleft; vent; break into parts, separate)

laryngofissure
Operative opening into the larynx, generally through the midline, commonly done for the excision of early carcinoma or the correction of laryngostenosis (stricture or narrowing of the larynx).
palatum fissum
Cleft palate.
palpebral fissure
The space between the eyelids extending from the outer to the inner canthus (either of the corners of the eye where the upper and lower eyelids meet).
photofission
Nuclear fission induced by high energy photons.
schizofissiparous
thyrofissure, laryngofissure
An operative opening, or incision, into the larynx, generally through the midline or thyroid cartilage, commonly done for the excision of early carcinoma or the correction of laryngostenosis.