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Webster 1913 Edition

(ĭd′ĭ-ō̍-blăst)

Noun.

[

Ideo-

-blast

(Bot.)

An individual cell, differing greatly from its neighbours in regard to size, structure, or contents.

idioblast ‎(plural idioblasts)

(botany) An isolated specialised cell found in the midst of an otherwise homogeneous group of cells in plant tissue.