First Known Use: 14th century
Dictionary
pia mater
noun pia ma·ter \ˈpī-ə-ˌmā-tər, ˈpē-ə-ˌmä-\
Definition of PIA MATER
: the thin vascular membrane that invests the brain and spinal cord internal to the arachnoid and dura mater
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Origin of PIA MATER
Middle English, from Medieval Latin, from Latin, tender mother
Rhymes with PIA MATER
abdicator, abnegator, activator, actuator, adulator, advocator, agitator, alligator, allocator, animator, annotator, applicator, arbitrator, aspirator, aviator, brachiator, buccinator, calculator, calibrator, captivator, carburetor, castigator, circulator, commentator, commutator, compensator, compurgator, concentrator, confiscator, congregator, consecrator, consummator, contemplator, corporator, correlator, cultivator, decorator, defalcator, delegator, demonstrator, denigrator, depredator, desecrater, designator, detonator, deviator, dissipater, dominator, dura mater, educator, elevator, emulator, escalator, estimator, excavator, explicator, expurgator, extirpator, fabricator, fascinator, figure skater, flocculator, formulator, fornicator, fractionator, fumigator, generator, gladiator, hesitater, hibernator, imitator, immolator, impregnator, incubator, indicator, infiltrator, in-line skater, innovator, inhalator, inspirator, instigator, insulator, integrator, lacrimator, liberator, liquidator, literator, lubricator, macerator, masticator, mediator, mitigator, moderator, modulator, motivator, mutilator, navigator, nomenclator, nominator, numerator, obturator, operator, orchestrator, oscillator, peculator, percolator, perforator, perpetrator, pollinator, postulator, procreator, procurator, promulgator, propagator, punctuator, radiator, re-creator, remonstrator, renovator, resonator, respirator, revelator, roller skater, rubricator, rusticator, salivator, second-rater, selling-plater, separator, simulator, stimulator, subjugator, Sunset Crater, syncopator, syndicator, tabulator, terminator, vaccinator, vacillator, valuator, venerator, ventilator, vindicator, violator, vitiator
Medical Dictionary
pia mater
noun pia ma·ter \-ˈmāt-ər\
Medical Definition of PIA MATER
: the delicate and highly vascular membrane of connective tissue investing the brain and spinal cord, lying internal to the arachnoid and dura mater, dipping down between the convolutions of the brain, and sending an ingrowth into the anterior fissure of the spinal cord—called also pia
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