congenital absence of a heart.

acardia a·car·di·a (ā-kär’dē-ə)
congenital absence of the heart, sometimes occurring in the smaller parasitic member of conjoined twins when its partner monopolizes the placental blood supply.

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  • Acari

    plural of . a mite, especially of the genus acarus. historical examples acari of all sizes—that is, in all stages of growth—may be met with in most samples of sugar. cooley’s cyclopdia of practical receipts and collateral information in the arts, manufactures, professions, and trades…, sixth edition, volume i arnold cooley the itchiness disappears almost […]

  • Acarus

    a mite, especially of the genus acarus. historical examples schlotheim thought that the spines on agnostus pisiformis were segmented and compared them with the antenn of acarus. the appendages, anatomy, and relationships of trilobites percy edward raymond acarus farinæ degeer, as its name indicates, is found in flour. our common insects alpheus spring packard a […]

  • Acarine

    any of numerous arachnids of the order acarina, comprising the mites and ticks. belonging or pertaining to the order acarina. acarine ac·a·rine (āk’ə-rīn’, -rēn’) adj. relating to or caused by an acarid. n. an acarid.

  • Acariasis

    infestation with acarids, especially mites. a skin disease caused by such infestation, as scabies. noun infestation of the hair follicles and skin with acarids, esp mites acariasis ac·a·ri·a·sis (āk’ə-rī’ə-sĭs) n. pl. ac·a·ri·a·ses (-sēz’) a disease, usually of the skin, caused by infestation with mites. also called acaridiasis, acarinosis.

  • Acaricide

    a substance or preparation for killing acarids. noun any drug or formulation for killing acarids acaricide a·car·i·cide (ə-kār’ĭ-sīd’) adj. destructive to acarids. n. an agent that destroys acarids.

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