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pterygospinous
pterygospinous adj.
Brit. 
/ˌtɛrᵻɡə(ʊ)ˈspʌɪnəs/
, /ˌtɛrᵻɡə(ʊ)ˈspʌɪnəs/U.S. /ˌtɛrəɡoʊˈspaɪnəs/
of or relating to the pterygoid process and the spine of the sphenoid bone; spec. designating a ligament running from the spine of the sphenoid bone to the lateral pterygoid plate./ˌtɛrəɡoʊˈspaɪnəs/ΚΠ
1890 Jrnl. Anthropol. Inst. 19 156 In one or two instances the spine of the sphenoid..was connected to the expanded external pterygoid plate by a well-marked pterygo spinous ligament.
1962 Gray's Anat. (ed. 33) 309 Its [sc. the lateral pterygoid plate's] irregular posterior border may present a backward projection, termed the pterygospinous process, which is connected by a ligament..to the spine of the sphenoid.
2001 Clin. Anat. 14 282 Although incomplete or complete ossification of the pterygospinous ligament is not uncommon, the combination with a medial course of the lingual nerve has not been described before.
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