accessory cell

[ ak-ses-uh-ree sel ]

noun

1. Immunology. any of various cells of the immune system that work with T or B cells to initiate a specific immune response.
2. Also called sub·sid·i·ar·y cell [s, uh, b-, sid, -ee-er-ee sel]. Botany. a plant epidermal cell associated with guard cells and different morphologically from other epidermal cells.

accessory cell

1. See subsidiary cell

Word History and Origins

Origin of accessory cell¹

First recorded in 1830–35