Also found in: Thesaurus, Medical, Encyclopedia.


n. pl. me·dul·las or me·dul·lae (-dŭl′ē)
1. The inner core of certain organs or body structures, such as the marrow of bone.
2. The medulla oblongata.
3. See myelin.
4. Botany
a. The pith in the stems or roots of certain plants.
b. The central portion of a thallus in certain lichens and red or brown algae.

[Middle English, from Latin, perhaps alteration (influenced by medius, middle) of *merulla.]

me·dul′lar, med′ul·lar′y (mĕd′l-ĕr′ē, mə-dŭl′ə-rē) adj.


a. medular, rel. a la médula;
___ataxiaataxia ___
___chemoreceptorquimoreceptor bulbar
Mentioned in ?
References in periodicals archive ?
Characterized by high secretion of catecholamines, pheochromocytoma is a tumour that originates from pheochromocytes in the medullar portion of the adrenal glands.
Magnetic resonance images of the brain and spinal cord (Figure 1) showed a bulging spinal tract rope at C2-D1 with hyperintensity in the central region, which increased after administration of gadolinium, involving mainly the medullar anterior horn and sparing the posterior columns and lateral and ventral fins.
8 Diameter [mm] n Lesion Inflammatory CA 1 Fibroadenoma 41 Ductal CA In Situ 5 Invasive Ductal CA 49 Invasive Lobular CA 3 Medullar CA 2 Papillary CA 2 Tubular CA 1 Location Lower Outer Quadrant 18 Lower Inner Quadrant 7 Upper Outer Quadrant 37 Upper Inner Quadrant 11 Retroareolar area 31 Breast Side Right 58 Left 46 Avg[+ or -]Sd Age [years] 48.
Mild to severe hemorrhages and lymphocytic depletion, follicle necrosis, leukocytic infiltration, cyst formation and fibrous tissue proliferation at medullar region of thymus and bursa were observed.
Postoperative morbidity is lower: after an extraction of iliac crest graft, the patient requires inability of 5 to 14 days, (7, 12, 56) with difficulties to walk for up to two weeks, while with tibia bone extraction, the patient will be disabled for three days maximum, the expected post-operative period after extracting the graft is much more manageable, and there is only a slight alteration in patient's mobility, which is recovered in its entirety two to five days after surgery, (16, 51) provided that the patient is warned against lifting heavy objects or performing sporting activities involving impacts to the legs, like playing soccer, for about three weeks, which is the minimum time required for proper filling of the medullar gaps in the tibial epiphysis.
At peripheral and medullar levels, various studies suggest the existence of alterations in the synchronization of motor units and of neural conductivity similar to those observed in the trained side (Carroll et al.
OMs are not encapsulated, thus promoting significant infiltration into the adjacent medullar bone.
Ayrica proximal femoral kanalin detayli incelenmesi icin kesitlerin cortico-medullar oranlar, isthmus pozisyonu orani ve medullar kanal genisleme oranlari hesaplandi.
The patient was taken to a biopsy that was initially interpreted as a medullar glioblastoma.
on cadavers showed that only the sagittal alignment of the prosthesis was affected in case of three different medullar entry points on the same femoral anteroposterior axis.