plural of synaptic cleft

(biochemistry) A small space, adjacent to a neuron, that receives neurotransmitter molecules from another neuron.

(Australia, Britain, dated) In a difficult situation, unable to choose between unfavourable options; in a dilemma. / Used other than figuratively or idiomatically: see in, cleft, stick.

A stick with a split at one end, once used by runners to carry written messages

plural of cleft stick

plural of cleft sentence

(embryogenesis) A cleft between the pars distalis and pars intermedia in certain organisms, where the proliferating anterior wall does not fully occupy Rathke's pouch.

plural of cleft chin

plural of natal cleft

An anatomical genetic trait in which a fissure in the lower jaw causes a visible dimple in the center of the chin.