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occipitomastoid
occipitomastoid adj. 
/əkˌsɪpᵻtə(ʊ)ˈmastɔɪd/,
Brit. /ɒkˌsɪpᵻtə(ʊ)ˈmastɔɪd/
, /ɒkˌsɪpᵻtə(ʊ)ˈmastɔɪd//əkˌsɪpᵻtə(ʊ)ˈmastɔɪd/U.S. /ɑkˌsɪpᵻdoʊˈmæˌstɔɪd/
of relating to the occipital and mastoid bones./ɑkˌsɪpᵻdoʊˈmæˌstɔɪd/ΚΠ
1855 L. Holden Human Osteol. 93 The ‘occipito-mastoid suture’..connects the occipital with the mastoid portion of the temporal bone.
1905 Jrnl. Anthropol. Inst. 35 37 A careful review of our records makes us believe that obliteration generally begins about midway between the lambda and the occipito-mastoid articulation, and that the upper part of the lambda closes last.
1980 Gray's Anat. (ed. 36) iii. 301/2 Inferiorly it [sc. the lambdoid suture] meets the occipitomastoid and parietomastoid sutures at the postero-inferior angle of the parietal bone.
1992 Current Anthropol. 33 541/2 Clear contrasts include..occipito-mastoid morphology.
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