As an exchange or replacement. / To reciprocate.

Any of several very large vehicles used for lifting, especially in the process of mining: basically an excavator which drags its bucket to fill it.

(informal) Exactly the same; identical.

(informal) Same, exactly the same, exact same.

An exact sequence with countably infinitely many terms.

plural of exact sequence

plural of long exact sequence

plural of exceptional space

plural of proof by example

plural of exchange rate