The two halves of the lower cervical tract are still separated by an apterium 4 mm. wide, as in the young bird, but contour feathers are now present on the chin and upper throat, so that they are united at their upper ends.
Source: wiktionary
Apterium
Synonyms for "apterium"
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Antonyms
1 entriescoordinate
1 entrieshas context
1 entriesrelated to
2 entriesTranslations
1 translations across 1 languages.
Portuguese
1 entries- aptéria noun (an area of featherless skin)
Sample sentences
1 total sentences available.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.