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lamb·doid 'lam-.dȯid or lamb·doi·dal .lam-'dȯid-əl adj having the Lambda or lambda shape of the Greek letter lambda esp of, relating to, or being the lambda-shaped suture that connects the occipital and parietal bones
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lamb·doid (lamґdoid) [Gr. lambda + -oid] shaped like the Greek letter Λ or λ.Medical dictionary. 2011.