Definition/Meaning  Word/Phrase 
ambiguous grammatical construction; e.g., `they are flying planes' can mean either that someone is flying planes or that something is flying planes 
amphibology
,
amphiboly

unit of length used for distances within the solar system; equal to the mean distance between the Earth and the Sun (approximately 93 million miles or 150 million kilometers) 
Astronomical Unit
,
AU

mathematical mean 
average

quality of being deliberately mean 
beastliness
,
meanness

strained or paradoxical use of words either in error (as `blatant' to mean `flagrant') or deliberately (as in a mixed metaphor: `blind mouths') 
catachresis

point representing the mean position of the matter in a body 
center of mass
,
centre of mass

advantage taken in mean way 
cheap shot

mean behavior 
cheeseparing
,
doggery

Greenwich Mean Time updated with leap seconds 
coordinated universal time
,
UTC

(statistics) the mean value of the product of the deviations of two variates from their respective means 
covariance

time for one complete rotation of the earth relative to a particular star, about 4 minutes shorter than a mean solar day 
day
,
sidereal day

statistical difference between one number in set and mean of the set 
deviation

act of distorting something so it seems to mean something it was not intended to mean 
distortion
,
overrefinement
,
straining
,
torture
,
twisting

(astronomy) a measure of time defined by Earth's orbital motion; terrestrial time is mean solar time corrected for the irregularities of the Earth's motions 
ephemeris time
,
TDT
,
terrestrial dynamical time
,
terrestrial time
,
TT

theoretical distribution with finite mean and variance 
Gaussian distribution
,
normal distribution

mean sea level 
geoid

mean of n numbers expressed as the nth root of their product 
geometric mean

borough of Greater London on the Thames; zero degrees of longitude runs through Greenwich; time is measured relative to Greenwich Mean Time 
Greenwich

mean of n numbers expressed as the reciprocal of the arithmetic mean of the reciprocals of the numbers 
harmonic mean

term formerly used to mean taking on the gender role of the opposite sex 
inversion
,
sexual inversion
