- megalaesthetes
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n. pl. [Gr. megas, large; aisthesis, sensation](MOLLUSCA: Polyplacophora)Large sensory organs terminating in the tegmentum in the forms of eyes with cornea, lens, pigment layers, iris and retina; see micraesthetes.
Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.