Meaning of truncate

(adj) terminating abruptly by having or as if having an end or point cut off; "a truncate leaf"; "truncated volcanic mountains"; "a truncated pyramid"

(verb) replace a corner by a plane

approximate by ignoring all terms beyond a chosen one; "truncate a series"

make shorter as if by cutting off; "truncate a word"; "Erosion has truncated the ridges of the mountains"