This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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v. To shorten by or as if by cutting off. See Synonyms at shorten.

v. To shorten (a number) by dropping one or more digits after the decimal point.

v. To replace (the edge of a crystal) with a plane face.

adj. Appearing to terminate abruptly, as a leaf of a tulip tree or a coiled gastropod shell that lacks a spire.

adj. Truncated.

v. To shorten something as if by cutting off part of it.

v. To shorten a decimal number by removing trailing (or leading) digits; to chop.

v. To replace a corner by a plane (or to make a similar change to a crystal).

adj. truncated

adj. Having an abrupt termination.

v. To cut off; to lop; to maim.

adj. Appearing as if cut off at the tip.

To reduce in size or quantity by cutting; cut down; maim.

In crystallography, to cut off an angle or edge by a plane section.

Truncated.

v. approximate by ignoring all terms beyond a chosen one

v. make shorter as if by cutting off

v. replace a corner by a plane

adj. terminating abruptly by having or as if having an end or point cut off

"But in January 2011, HCL said, News International asked whether HCL was capable of helping "truncate" - meaning delete - "a particular database" in the e-mail system."

short   

truncated    truncates    truncating   

judge    guess    gauge    approximate    estimate    shorten    replace    interchange    substitute    exchange   

pyramid    truncated cylinder    truncated cube    truncate elytra   

truncation    trunk   

truncated    truncating   

lop    maim    dock    round down   

seven-atomed    bone-filled    far-seen    spall    wedge-like    smoke-belching    white pine    100-percent    carbotanium    dirt-floored