List of 13-letter words beginning with

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There are 12 thirteen-letter words beginning with TAC

TACHEOMETRIES	• TACHEOMETRY n. measurement by use of a tacheometer, an instrument for rapidly measuring survey points on a map.
TACHISTOSCOPE	• tachistoscope n. A device that displays a series of brief images; used by psychologists to investigate perception, memory and learning. • TACHISTOSCOPE n. an instrument for rapidly showing images on a screen to test perception.
TACHOMETRICAL	• TACHOMETRICAL adj. relating to measurement by tachometer, also TACHOMETRIC.
TACHYGRAPHERS	• tachygraphers n. Plural of tachygrapher. • TACHYGRAPHER n. a shorthand writer, also TACHYGRAPH, TACHYGRAPHIST.
TACHYGRAPHIES	• TACHYGRAPHY n. shorthand.
TACHYGRAPHIST	• tachygraphist n. A writer in tachygraphy, or shorthand. • TACHYGRAPHIST n. a shorthand writer, also TACHYGRAPH, TACHYGRAPHER.
TACHYMETRICAL	• TACHYMETRICAL adj. relating to measurement by tachymeter, also TACHYMETRIC.
TACHYPHRASIAS	• TACHYPHRASIA n. abnormally rapid or voluble speech, also TACHYPHASIA.
TACHYPHYLAXES	• tachyphylaxes n. Plural of tachyphylaxis. • TACHYPHYLAXIS n. very rapid development of tolerance or immunity to the effects of a drug.
TACHYPHYLAXIS	• tachyphylaxis n. (Medicine) A rapidly decreasing response to a drug following administration of the initial doses. • TACHYPHYLAXIS n. very rapid development of tolerance or immunity to the effects of a drug.
TACITURNITIES	• taciturnities n. Plural of taciturnity. • TACITURNITY n. the state of being taciturn.
TACTFULNESSES	• tactfulnesses n. Plural of tactfulness. • TACTFULNESS n. the state of being tactful.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the 1Word.ws and WikWik.org.

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See this list for:

English Wiktionary: 26 words
Scrabble in French: 14 words
Scrabble in Spanish: 3 words
Scrabble in Italian: 33 words
Scrabble in German: no word
Scrabble in Romanian: 12 words

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