| quadratus muscle | <anatomy> A muscle that is more or less square in shape. Synonym: musculus quadratus, quadrate muscle. (05 Mar 2000) |
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| quadratus plantae | <anatomy, muscle> Origin, by two heads from the lateral and medial borders of the inferior surface of the calcaneus; insertion, tendons of flexor digitorum longus; action, assists long flexor; nerve supply, lateral plantar. Synonym: musculus flexor accessorius, musculus quadratus plantae, accessory flexor muscle of foot, caro quadrata sylvii, musculus pronator pedis, plantar quadrate muscle, quadrate muscle of sole. (05 Mar 2000) |
| quadri- | Four. Origin: L. Quattuor (05 Mar 2000) |
| quadribasic | <chemistry> Same as Tetrabasic. Source: Websters Dictionary (01 Mar 1998) |
| quadric | <mathematics> A surface whose equation in three variables is of the second degree. Spheres, spheroids, ellipsoids, paraboloids, hyperboloids, also cones and cylinders with circular bases, are quadrics. Of or pertaining to the second degree. Source: Websters Dictionary (01 Mar 1998) |
| quadricapsular | <botany> Having four capsules. Source: Websters Dictionary (01 Mar 1998) |
| quadriceps femoris | <anatomy, muscle> Origin, by four heads: rectus femoris, vastus lateralis, vastus intermedius, and vastus medialis; insertion, patella, and thence by ligamentum patellae to tuberosity of tibia; action, extends leg; flexes thigh by action of rectus femoris; nerve supply, femoral. Synonym: musculus quadriceps femoris, musculus quadriceps extensor femoris, quadriceps muscle of thigh. (05 Mar 2000) |
| quadriceps muscle of thigh | <anatomy, muscle> Origin, by four heads: rectus femoris, vastus lateralis, vastus intermedius, and vastus medialis; insertion, patella, and thence by ligamentum patellae to tuberosity of tibia; action, extends leg; flexes thigh by action of rectus femoris; nerve supply, femoral. Synonym: musculus quadriceps femoris, musculus quadriceps extensor femoris, quadriceps muscle of thigh. (05 Mar 2000) |
| quadriceps reflex | A sudden contraction of the anterior muscles of the thigh, caused by a smart tap on the patellar tendon while the leg hangs loosely at a right angle with the thigh. Synonym: knee jerk, knee phenomenon, knee reflex, knee-jerk reflex, patellar tendon reflex, quadriceps reflex. (05 Mar 2000) |
| quadricepsplasty | A corrective surgical procedure on the quadriceps femoris. Origin: quadriceps + G. Plastos, formed (05 Mar 2000) |
| quadricipital | <anatomy> Of or pertaining to the quadriceps. Source: Websters Dictionary (01 Mar 1998) |
| quadricorn | <zoology> Any quadricornous animal. See: Quadricornous. Source: Websters Dictionary (01 Mar 1998) |
| quadricornous | <zoology> Having four horns, or hornlike organs; as, a quadricornous beetle. Origin: Quadri- + L. Cornu horn: cf. F. Quadricorne. Source: Websters Dictionary (01 Mar 1998) |
| quadricuspid | Having four cusps. Synonym: quadricuspid. (05 Mar 2000) |
| quadridentate | Having four teeth; as, a quadridentate leaf. Source: Websters Dictionary (01 Mar 1998) |