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(mij) A small, gnatlike fly from the families Chironomidae and Ceratopogonidae. Some midges cause painful bites.


(mĭjʹĭt) A nontechnical term for a very small person; an adult who is perfectly formed but has not attained and will not attain normal size.


(midʹgŭt″) The middle section of the embryonic gut tube, supplied by blood by the superior mesenteric artery. The caudal section of the duodenum, the jejunum, the ileum, the cecum (and appendix), the ascending colon, and approx. two thirds of the transverse colon develop from the midgut.


(midʹlīf″) Middle age. midlife, adj.


(midʹlīn″) 1. A line that bisects a bilaterally symmetrical structure. 2. In the center of an anatomical structure.


(miĭd″ok-sipʹĭt-ăl) In the middle of the occiput.


(midʹpăr-ĕn-tăl) An estimate of the blended effect of maternal and paternal traits on a child’s phenotype.


(midʹplān″) 1. The plane bisecting a symmetrical structure; the median plane. 2. In obstetrics, the plane of least dimensions in the pelvic outlet.


(midʹrif″) The middle region of the torso; the diaphragm.


(midʹsek″shŏn) A section through the middle of a structure.

midstream specimen of urine

A urine specimen collected after the first few milliliters of urine are voided and discarded. SEE: clean-catch method.


(mid″tarʹsăl) Between the two rows of bones that make up the tarsus of the foot.


(mĭdʹwīf) [ʺ + wif, wife] Nurse midwife.


(mĭd-wīfʹĕr-ē) The practice of assisting at childbirth. SEE: obstetrics.

Midwives Alliance of North America

ABBR: MANA. A professional certification and advocacy group for midwives and midwifery care, students of midwifery, and their supporters.


maximum inspiratory force.


(mīf″ĕ-prĭsʹtōn) An abortifacient drug that blocks the action of progesterone. It is not used more than 47 days after the last menstrual period. A prostaglandin is administered by injection or as a suppository as an adjunct.


(mīʹgrān″) [Fr. fr. L. hemicrania, fr. Gr. hemikrania, (headache in) half (of the) skull] A familial disorder marked by periodic, usually unilateral, pulsatile headaches that begin in childhood or early adult life and tend to recur with diminishing frequency in later life. SYN: migraine headache...

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