1. x(n = noun.quantity) 10, decade, ten, tenner - the cardinal number that is the sum of nine and one; the base of the decimal system; Array
is a kind of large integer
2. x(n = noun.communication) ex - the 24th letter of the Roman alphabet; Array
is a kind of alphabetic character, letter, letter of the alphabet
is a member of latin alphabet, roman alphabet
3. x(n = noun.artifact) adam, cristal, disco biscuit, ecstasy, go, hug drug, xtc - street names for methylenedioxymethamphetamine; Array
is a kind of mdma, methylenedioxymethamphetamine
x(s = adj.all) 10, ten - being one more than nine; Array
X, the twenty-fourth letter of the English alphabet, has three sounds; a compound nonvocal sound (that of ks), as in wax; a compound vocal sound (that of gz), as in example; and, at the beginning of a word, a simple vocal sound (that of
" The form and value of X are from the Latin X, which is from the Greek
x, n. (also x) (pl. Xs or X's)
1 the twenty-fourth letter of the alphabet.
2 (as a Roman numeral) ten.
3 (usu. x) Algebra the first unknown quantity.
4 Geom. the first coordinate.
5 an unknown or unspecified number or person etc.
6 a cross-shaped symbol esp. used to indicate position (X marks the spot) or incorrectness or to symbolize a kiss or a vote, or as the signature of a person who cannot write.
x, symb. (of films) classified as suitable for adults only.
Usage:
Formerly used in the UK to indicate that persons under 18 would not be admitted; it was replaced in 1983 by 18, but is still used in the US.
N ignorance, nescience, tabula rasa, crass ignorance, ignorance crasse, unfamiliarity, unacquaintance, unconsciousness, darkness, blindness, incomprehension, inexperience, simplicity, unknown quantities, x, y, z, sealed book, terra incognita, virgin soil, unexplored ground, dark ages, smattering, sciolism, glimmering, dilettantism, bewilderment, incapacity, pedantry, charlatanry, charlatism, Philister, Philistine, ignorant, nescient, unknowing, unaware, unacquainted, unapprised, unapprized, unwitting, unweeting, unconscious, witless, weetless, a stranger to, unconversant, uninformed, uncultivated, unversed, uninstructed, untaught, uninitiated, untutored, unschooled, misguided, unenlightened, Philistine, behind the age, shallow, superficial, green, rude, empty, half-learned, illiterate, unread, uninformed, uneducated, unlearned, unlettered, unbookish, empty-headed, dizzy, wooly-headed, pedantic, in the dark, benighted, belated, blinded, blindfolded, hoodwinked, misinformed, au bout de son latin, at the end of his tether, at fault, at sea, caught tripping, unknown, unapprehended, unexplained, unascertained, uninvestigated, unexplored, unheard of, not perceived, concealed, novel, ignorantly, unawares, for anything, for aught one knows, not that one knows, Int, God knows, Heaven knows, the Lord knows, who knows, nobody knows, ignorance never settles a question, quantum animis erroris inest!, small Latin and less Greek, that unlettered small-knowing soul, there is no darkness but ignorance.
factor x, gen x, generation x, leo x, letter x, louis x, malcolm x, pius x, regression of y on x, x chromosome, x ray