# median

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Related to median nerve injury: ulnar nerve injury

## median

[me´de-an]**1.**situated in the median plane or in the midline of a body or structure.

**2.**any value that divides the probability distribution of a random variable in half; that is, the probability of observing a value above the median and the probability of observing a value below the median are both less than or equal to one-half. For a finite population or sample, the median is the middle value of an odd number of values (arranged in ascending value) or any value between the two middle values of an even number of values; in the latter case it is conventional to use the average of the two middle values.

## me·di·an

(mē'dē-ăn),**1.**middle; lying in the midline. Synonym(s): medianus

**2.**The middle value in a set of measurements; like the mean, a measure of central tendency.

[L.

*medianus,*middle]## median

/me·di·an/ (me´de-in)**1.**situated in the median plane or in the midline of a body or structure.

**2.**the value of the middle item of a series when the items are arranged in numerical order. Symbol m.

## median

(mē′dē-ən)*adj.*

**1.**Relating to, located in, or extending toward the middle.

**2.**

*Anatomy*Of, relating to, or situated in or near the plane that divides a bilaterally symmetrical animal into right and left halves; mesial.

**3.**

*Statistics*Relating to or constituting the middle value in a distribution.

*n.*

**1.**A median point, plane, line, or part.

**2.**

*Statistics*The middle value in a distribution, above and below which lie an equal number of values.

**3.**

*Mathematics*

**a.**A line that joins a vertex of a triangle to the midpoint of the opposite side.

**b.**The line that joins the midpoints of the nonparallel sides of a trapezoid.

**me′di·an·ly**

*adv.*

## median (med)

[mē′dē·ən]

Etymology: L,

*medius,*middle(in statistics) the number representing the middle value of the scores in a sample. In an odd number of scores arrayed in ascending order, it is the middle score. In an even number of scores so arrayed, it is the average of the two central scores.

## median

EBMThe exact middle value in a set of values that has been arranged in order from highest to lowest—i.e., there are as many values greater and less than the median. Where there is an even number of values, the median is designated as halfway between the two middle values.

Statistics

The midpoint of data after being ranked in a distribution, above and below which lie an equal number of values; a measure of central location, which divides a set of data into two equal parts; the data value at rank 0.5 x (n + 1).

The median is a better measure than the mean of the centre of a data distribution when the data are not symmetrically (normally) distributed, as it is not affected as severely as the mean by the outliers and non-symmetry typical of biological data. The median appears as a line in the box of a box-and-whisker plot and divides the middle two quartiles. Medians are compared by non-parametric statistical procedures.

## me·di·an

(mē'dē-ăn)**1.**Central; middle; lying in the midline.

**2.**The middle value in a set of measurements; like the mean, a measure of central tendency.

## median

**1.**Situated in or towards the MEDIAN PLANE of the body.

**2.**In statistics, the middle value when observations are ranked in order of magnitude.

## median

- (of a structure or character) describing a location along the line of bilateral symmetry
- (in statistics), the middle value in a frequency distribution, on either side of which lie values with equal total frequencies.

## median

middle value in range of measurements; mean, median and mode are identical in normally distributed data## me·di·an

(mē'dē-ăn)**1.**Central; middle; lying in the midline.

**2.**The middle value in a set of measurements.

## median (mē´dēən),

*adj*

**1.**pertaining to the middle.

*n*

**2.**a measure of central tendency attained by a calculation or count that separates all cases in a ranked distribution into halves. The median may be used as an average score.

**median lethal dose**,

*n*See dose, lethal, median.

**median line**,

*n*See line, median.

**median mandibular point**,

*n*See point, median mandibular.

**median nerve**,

*n*one of the terminal branches of the brachial plexus that extends along the radial portions of the forearm and the hand and supplies various muscles and the skin of these parts.

**median retruded relation**,

*n*See relation, centric.

**median rhomboid glossitis**,

*n*See atrophy, central papillary.

**median sagittal plane**,

*n*See plane, median sagittal.

## median

1. situated in the median plane or in the midline of a body or structure.

2. the perpendicular line that divides the area of a frequency curve into two equal halves.

**median calving date**

the number of days between the first calving in the herd and the 50th percentile calving; an excellent measure of fertility status of seasonally calving herds; in dairy herds the target is 18 days.

**median eminence**

part of the hypophysis.

**median nerve**

see Table 14.

**median nerve block**

the anesthetic agent is injected on the medial aspect of the forelimb, just distal to the elbow. An area encircling most of the fetlock and pastern is desensitized.

**median nerve injury**

results in overextension and dropping of the carpus.

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