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n. pl. mi·cro·ceph·a·lies
Abnormal smallness of the head.

mi′cro·ce·phal′ic (-sə-făl′ĭk) adj. & n.
mi′cro·ceph′a·lous (-sĕf′ə-ləs) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.microcephalous - having an abnormally small head and underdeveloped brain; "a nanocephalic dwarf"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Likewise, Yanko's jumping about could indicate regression, could identify him as one of Darwin's "microcephalous idiots" (Descent 271).
46 Someone or something microcephalous has a particularly small what?
Table 2: Type of Anomaly (n=62) Type of Anomaly Frequency Hydrocephalus 16 Anencephaly 14 Meningomyelocele 4 Encephalocele 6 CNS Anomalies, [49 (79%)] Hydroceph+meningomylocele 4 Anenceph+spinabifida 2Isolated Microcephalous 1Anomalies, [57(91.9%)] Acrania 1 Dandy walker malformation 1 Polyscystic kidneys 2 Renal Anomalies, [4 (6.5%)] Dysplastic Multicystic kidneys 2 Omphalocele 1 GIT Anomalies, [2 (3.2%)] Gastroschisis 1 Skeletal Anomalies, [2 (3.2%)] Achondroplasia 2 Mickel Gruber syndrome 2 Hydroceph, Omphalocele 1Complex Anomalies, [5 (8.1%)] Esophageal atresia, Renal anomlies 1 Facial abnormalities, Talipes, Esophageal 1 atresia, Renal agenesis