dendrites On of the threadlike extensions of the cytoplasm of a neuron. In unipolar and bipolar neurons, they resemble axons structurally, but typically, as in multipolar neurons, they branch into treelike processes. Dendrites comprise most of the receptive surfaces of a neuron. (CancerWeb OMD) A branched protoplasmic extension of a nerve cell that conducts impulses from adjacent cells inward toward the cell body. A single nerve may possess many dendrites. Also called dendron. (DCom) A branched protoplasmic extension of a nerve cell that conducts impulses from adjacent cells inward toward the cell body. A single nerve may possess many dendrites. Also called dendron. (AHeritage)