holobranch
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holobranch — hol·o·branch … English syllables
holobranch — ˈhäləˌbraŋk, ˈhōl noun ( s) Etymology: International Scientific Vocabulary hol + branch : a fish gill in which the branchial arch has two rows of lamellae or filaments compare hemibranch 2 … Useful english dictionary
hemibranch — 1) one of the two vertical rows of gill filaments composing a whole gill or holobranch 2) the half gill on the hyoid arch under the gill cover, also called the pseudobranch … Dictionary of ichthyology