-\def\vcentcolon{:} mathtools
-\def\dblcolon{\vcentcolon\kern-8mu\vcentcolon} mathtools
-\def\coloneqq{\vcentcolon\kern-7mu=} mathtools
-\def\Coloneqq{\dblcolon\kern-7mu=} mathtools
-\def\coloneq{\vcentcolon\kern-7mu-} mathtools
-\def\Coloneq{\dblcolon\kern-7mu-} mathtools
-\def\eqqcolon{=\kern-8mu\vcentcolon} mathtools
-\def\Eqqcolon{=\kern-8mu\dblcolon} mathtools
-\def\eqcolon{-\kern-8mu\vcentcolon} mathtools
-\def\Eqcolon{-\kern-8mu\dblcolon} mathtools
-\def\colonapprox{\vcentcolon\kern-7mu\approx} mathtools
-\def\Colonapprox{\dblcolon\kern-7mu\approx} mathtools
-\def\colonsim{\vcentcolon\kern-7mu\sim} mathtools
-\def\Colonsim{\dblcolon\kern-7mu\sim} mathtools
+\def\vcentcolon{:} mathtools :
+\def\dblcolon{\vcentcolon\kern-8mu\vcentcolon} mathtools ::
+\def\coloneqq{\vcentcolon\kern-7mu=} mathtools ≔
+\def\Coloneqq{\dblcolon\kern-7mu=} mathtools ::=
+\def\coloneq{\vcentcolon\kern-7mu-} mathtools :-
+\def\Coloneq{\dblcolon\kern-7mu-} mathtools ::-
+\def\eqqcolon{=\kern-8mu\vcentcolon} mathtools ≕
+\def\Eqqcolon{=\kern-8mu\dblcolon} mathtools =::
+\def\eqcolon{-\kern-8mu\vcentcolon} mathtools -:
+\def\Eqcolon{-\kern-8mu\dblcolon} mathtools -::
+\def\colonapprox{\vcentcolon\kern-7mu\approx} mathtools :≈
+\def\Colonapprox{\dblcolon\kern-7mu\approx} mathtools ::≈
+\def\colonsim{\vcentcolon\kern-7mu\sim} mathtools :∼
+\def\Colonsim{\dblcolon\kern-7mu\sim} mathtools ::∼