ANNULAR CELL
\ɐnjˈʊlɑː sˈɛl], \ɐnjˈʊlɑː sˈɛl], \ɐ_n_j_ˈʊ_l_ɑː s_ˈɛ_l]\
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A vegetable cell in which there are one or more annular thickenings of the cell wall upon its inner surface. These and other markings, such as scalform and porous, belong rather to vessels than to single cells, vessels being made up of a number of cells which have lost their individual markings.
By Smith Ely Jelliffe
