Category: M

A haploid cell formed in meiosis.  

Dosages of vitamins in amounts that far exceed the recommended daily allowances, megavitamin therapy. Term used to describe massive quantities of a specific nutrient when given for therapeutic purposes. A dose of one or more vitamins that is much in excess of the normal daily requirements (up to 10 times the recommended daily intake).  

The equivalent to a million tons. Often used to describe the explosive power of an atomic bomb, e.g., a 1 megaton bomb has the explosive power of one million tons of TNT.  

Megasporocyte.  

The process of production of megaspores.  

A large, nucleated embryonic type of cell. A is found in the blood in cases of pernicious anemia, vitamin B12 deficiency, and folacin deficiency.  

The layer surrounding a medullated nerve fiber.  

The three successive shapes in the embryonic development of the central nervous system of vertebrates. The central portion of the ectoderm in the embryo developing into the neural canal.  

The deep, inner substance or tissue of an organ or part, as of the kidney or of a hair. The soft inner part of an organ, as opposed to the outer cortex. Any structure similar to bone marrow. Medullae, innermost part of an organ or structure, as in the adrenal medulla. Innermost area of an…

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