Definition of cloacal in US English:



  • See cloaca

    • ‘A current theory is that the eggs are ovulated through the cloacal pore and are expelled under pressure by muscular contractions.’
    • ‘Birds were mist-netted or caught in seed-baited traps and sexed by examination of the cloacal protuberance.’
    • ‘Bird penile tissue, where it exists, also develops on the ventral cloacal wall.’
    • ‘But most birds and Sphenodon lack intromittent organs and transfer sperm by cloacal apposition.’
    • ‘Little is known of their reproductive biology, but the lack of both spermatheca in females, and cloacal glands in males, suggests external fertilization.’