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accessory cell

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 subsidiary cell. Botany. a plant epidermal cell associated with guard cells and different morphologically from other epidermal cells.

Origin of accessory cell

First recorded in 1830–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
subsidiary cell in Science

subsidiary cell

[səb-sĭd′ē-ĕr′ē]
  1. A plant epidermal cell that is located next to a guard cell in the stoma of a leaf and differs in structure from other epidermal cells. Also called accessory cell

accessory cell

  1. See subsidiary cell.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.