dendrite

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A mineral crystallizing in another mineral in the form of branching or treelike mark.
2. n. A rock or mineral bearing such a mark or marks.
3. n. 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.

Century Dictionary and Cyclopedia

1. n. A stone or a mineral on or in which are figures resembling shrubs, trees, or mosses. The appearance is often due to arborescent crystallization, resembling frostwork on windows. The figures are most abundant on the surfaces of fissures and in joints in rocks, where they are attributable to the presence of the hydrous oxid of manganese, which generally assumes such forms.
2. n. A complex crystalline growth of arborescent form, such as is common with metallic silver and copper.
3. n. In neural., one of the protoplasmic processes of a nerve-cell: opposed to *neurite, the axis-cylinder. See cut at *neuron.

Wiktionary

1. n. cytology A slender projection of a nerve cell which conducts nerve impulses from a synapse to the body of the cell; a dendron.
2. n. cytology Slender cell process emanating from the cell bodies of dendritic cells and follicular dendritic cells of the immune system.
3. n. crystallography, metallurgy tree-like structure of crystals growing as material crystallizes

GNU Webster's 1913

1. n. (Min.) A stone or mineral on or in which are branching figures resembling shrubs or trees, produced by a foreign mineral, usually an oxide of manganese, as in the moss agate; also, a crystallized mineral having an arborescent form, e. g., gold or silver; an arborization.

WordNet 3.0

1. n. short fiber that conducts toward the cell body of the neuron