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Tending to produce death; threatening a fatal issue; virulent; as, malignant diphtheria. Malignant pustule (Med.), a very contagious disease, transmitted to man from animals, characterized by the formation, at the point of reception of the virus, of a vesicle or pustule which first enlarges and then breaks down into an…

urinary tubules of the kidney. Malpighian corpuscles of the spleen, masses of adenoid tissue connected with branches of the splenic artery.

A writ issued by a superior court and directed to some inferior tribunal, or to some corporation or person exercising authority, commanding the performance of some specified duty.

The process of giving an orange color to goods formed of animal tissue, as silk or wool, not by coloring matter, but by producing a certain change in the fiber by the action of dilute nitric acid. Tomlinson.

The tissue which fills the cavities of most bones; the medulla. In the larger cavities it is commonly very fatty, but in the smaller cavities it is much less fatty, and red or reddish in color.

The lifeless portion of tissue, either animal or vegetable, situated between the cells; the intercellular substance.

A soft tissue, occupying the center of the stem or branch of a plant; pith. Medulla oblongata. Etym: [L., oblong medulla] (Anat.), the posterior part of the brain connected with the spinal cord. It includes all the hindbrain except the cerebellum and pons, and from it a large part of the cranial nerves arise. It contro…

e brain and spinal cord are developed. -- Medullary rays (Bot.), the rays of cellular tissue seen in a transverse section of exogenous wood, which pass from the pith to the bark. -- Medullary sheath (Anat.), the layer of white semifluid substance (myelin), between the primitive sheath and axis cylinder of a medullate…

A thin layer or fold of tissue, usually supported by a fibrous network, serving to cover or line some part or organ, and often secreting or absorbing certain fluids.

Tissue composed of spheroidal cells.

A tissue of growing cells, or cells capable of further division.

The part of the mesoblast which gives rise to the connective tissues and blood.

embranes, or one of the membranes (consisting of a fold of the peritoneum and inclosed tissues), which connect the intestines and their appendages with the dorsal wall of the abdominal cavity. The mesentery proper is connected with the jejunum and ilium, the other mesenteries being called mesoc, mesocolon, mesorectum,…

The middle layer of tissue in some vegetable structures.

Pertaining to, or derived from, the mesoderm; as, mesodermal tissues.

A thin gelatinous tissue separating the ectoderm and endoderm in certain coelenterates. -- Mes`o*gloeal, a.

The act or process, by which living tissues or cells take up and convert into their own proper substance the nutritive material brought to them by the blood, or by which they transform their cell protoplasm into simpler substances, which are fitted either for excretion or for some special purpose, as in the manufacture…

The act or process by which matter is taken up by cells or tissues and is transformed into other matter; in plants, the act or process by which are produced all of those chemical changes in the constituents of the plant which are not accompanied by a production of organic matter; metabolism.

ting the egg, is converted into a multitude of cells, which are metamorphosed into the tissues of the body. A central cavity is commonly developed, and the cells around it are at first arranged in two layers, -- the ectoderm and endoderm. The group comprises nearly all animals except the Protozoa.

appearance occasioned by an accumulation of serum and sometimes of pus in the cellular tissue. -- Milk meats, food made from milk, as butter and cheese. [Obs.] Bailey. -- Milk mirror. Same as Escutcheon, 2. -- Milk molar (Anat.), one of the deciduous molar teeth which are shed and replaced by the premolars. -- Milk…