spheno-

• sphen- (before a vowel)

From Ancient Greek σφήν (sphḗn, “wedge”).

• (Received Pronunciation) IPA^(key): /sfiː.nə(ʊ)/
• (General American) IPA^(key): /sfi.noʊ/, /sfi.nə/

spheno-

1. Wedge, wedge-shaped.

   sphenogram

2. (anatomy) Of or pertaining to the sphenoid bone.

   sphenomastoid

• “sphen-”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.

• 'phones, pheons, phones, poshen