ostiateadj.
/ˈɒstɪət/, U.S. /ˈɑstiət/ Zoology. rare.
Having or characterized by the presence of ostia (ostium n. 2b).
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the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [adjective] > of internal organ > of or relating to or having ostium
ostial1885
ostiate1897
1897 Nat. Sci. Apr. 266 The parapodial jaws and the ostiate heart cannot be supposed to have been both developed independently in each group of arthropods.
1952 Syst. Zool. 1 13/2 (caption) The heart and respiratory system of Agelena, a genus belonging to the six-ostiate branch Trionycha.
1977 S. M. Manton Arthropoda vi. 236 The new features that appear in the Arthropoda: the firm exoskeleton, coupled with growth by ecdysis; jointed appendages; striated muscle; haemocoel and ostiate heart.
This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022).
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