1.(Physiol. Chem.) Dextrin not colorable by iodine. See Dextrin.
achroodextrin
enUS
ach·ro·o·dex·trin
(ak-rō'ō-deks'trin), Dextrin of low molecular weight, formed from starch in a stage of the digestion of the latter by amylase; it produces no color reaction with iodine. Compare: amylodextrin, erythrodextrin. Synonym(s): achrodextrin [G. achromos, uncolored, + dextrin]