SYN: leptomeninx.

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pia-arach·noid .pī-ə-ə-'rak-.nȯid, .pē- also pia-arach·noid·al -ə-.rak-'nȯid-əl or pi·arach·noid .pī-ə-'rak-, .pē- adj of, relating to, or being the leptomeninges
pia-arachnoid also piarachnoid n LEPTOMENINGES

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pia-arach·noid (pi″ə-ə-rakґnoid) [pia + arachnoid] the pia mater and the arachnoid considered together as one functional unit; the leptomeninges.

Medical dictionary. 2011.

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Look at other dictionaries:

  • pia-arachnoid — pia arach·noid …   English syllables

  • pia-arachnoid — …   Useful english dictionary

  • pia-glia — (pi″ə gliґə) a membrane formed by the fusion of the pia mater and the membrana limitans; it constitutes one of the layers of the pia arachnoid …   Medical dictionary

  • pia-arachnoidal — adjective see pia arachnoid …   Useful english dictionary

  • arachnoid — [ə rak′noid΄] adj. [ModL arachnoides < Gr arachnoeidēs, like a cobweb < arachnē, spider (see ARACHNID) + eidēs, OID] 1. Anat. designating the middle of three membranes covering the brain and the spinal cord: see DURA MATER, PIA MATER 2. Bot …   English World dictionary

  • Arachnoid — A*rach noid, a. [Gr. ? like a cobweb; ? spider, spider s web + e i^dos form.] 1. Resembling a spider s web; cobweblike. [1913 Webster] 2. (Anat.) Pertaining to a thin membrane of the brain and spinal cord, between the dura mater and pia mater.… …   The Collaborative International Dictionary of English

  • arachnoid — mater; n. the middle of the three membranes covering the brain and spinal cord (see meninges), which has a fine, almost cobweb like, texture. Between it and the pia mater within lies the subarachnoid space, containing cerebrospinal fluid and… …   The new mediacal dictionary

  • pia — mater; n. the innermost of the three meninges surrounding the brain and spinal cord. The membrane is closely attached to the surface of the brain and spinal cord, faithfully following each fissure and sulcus. It contains numerous finely branching …   The new mediacal dictionary

  • pia mater — [pī′ə māt′ər] [ME < ML (lit., gentle mother < fem. of L pius, tender, PIOUS + mater,MOTHER1): used as transl. of Ar al umm al raqīqa] the vascular membrane immediately enveloping the brain and spinal cord and surrounded by the arachnoid and …   English World dictionary

  • Arachnoid mater — Infobox Brain Name = PAGENAME Latin = GraySubject = 193 GrayPage = 876 Caption = The medulla spinalis and its membranes. Caption2 = Diagrammatic representation of a section across the top of the skull, showing the membranes of the brain, etc.… …   Wikipedia

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