microdontian.
/ˌmʌɪkrə(ʊ)ˈdɒntɪə/, U.S. /ˌmaɪkroʊˈdɑn(t)ʃ(i)ə/ Medicine and Dentistry.
Abnormally small size of the teeth, or of one or more teeth.
ΚΠ
1948 H. H. Stones Oral & Dental Dis. vii. 121 Megadontia and microdontia are the terms used to denote teeth that are respectively unusually large and small.
1950 Jrnl. Mental Sci. 96 684 Malformed, peg-shaped teeth and microdontia were most prevalent in Mongols.
1970 Amer. Jrnl. Physical Anthropol. 33 389 (title) Generalized microdontia probably assoicated with intrauterine growth retardation in a medieval skeleton.
1984 Pediatrics 73 816 Possible chemotherapeutic effects..comprised acquired amelogenesis imperfecta, microdontia of bicuspid teeth, and a tendency toward thinning of roots with an enlarged pulp chamber.
1999 Internat. Jrnl. Pediatric Dentistry 9 293 The dental features of these cases [of incontinentia pigmenti] were typical and included missing teeth, microdontia and delayed eruption.
This is a new entry (OED Third Edition, December 2001; most recently modified version published online March 2022).
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n.1948