[fahy-sos-tuh-muh s] /faɪˈsɒs tə məs/

adjective, Ichthyology.
having the mouth and air bladder connected by an air duct.
(of fishes) having a duct connecting the air bladder to part of the alimentary canal Compare physoclistous


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  • Phytate

    [fahy-teyt] /ˈfaɪ teɪt/ noun, Chemistry, Biochemistry. 1. a salt or ester of , occurring in plants, especially cereal grains, capable of forming insoluble complexes with calcium, zinc, iron, and other nutrients and interfering with their absorption by the body.

  • Phytic-acid

    [fahy-tik, fit-ik] /ˈfaɪ tɪk, ˈfɪt ɪk/ noun, Chemistry. 1. a white to pale-yellow, water-soluble liquid, C 6 H 1 8 O 2 4 P 6 , found in cereal grains: used chiefly to chelate heavy metals during the manufacture of animal fats and vegetable oils and as a water-softening agent.

  • Phyte

    1. variant of as final element of compound words: lithophyte. combining form 1. indicating a plant of a specified type or habitat: lithophyte, thallophyte word-forming element meaning “plant, plant characteristic; planting, growth; abnormal growth,” from Greek phyton “plant” (see phyto-). -phyte suff.

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