Also found in: Thesaurus, Medical, Legal, Financial, Idioms, Encyclopedia.


a. Activity that requires physical or mental exertion, especially when performed to develop or maintain fitness: walks every day for exercise.
b. A specific activity performed to develop or maintain fitness or a skill: sit-ups and other exercises; a piano exercise.
a. The active use or application of something: the exercise of good judgment.
b. The discharge of a duty, function, or office.
3. An activity having a specified aspect: an undertaking that was an exercise in futility.
4. A military maneuver or training activity.
5. exercises A ceremony that includes speeches, presentations, and other activities: graduation exercises.
v. ex·er·cised, ex·er·cis·ing, ex·er·cis·es
a. To subject to practice or exertion in order to train, strengthen, or develop: exercise the back muscles; exercise the memory.
b. To put through exercises: exercise a platoon. See Synonyms at practice.
a. To make active use of; employ, apply, or exert: exercise restraint; exercise control.
b. To discharge (duties, for example).
a. To carry out the functions of: exercise the role of disciplinarian.
b. To execute the terms of (a stock option, for example).
4. To alarm, worry, or anger; upset: an injustice that exercised the whole community.
To engage in exercise.

[Middle English, from Old French exercice, from Latin exercitium, from exercitus, past participle of exercēre, to exercise : ex-, ex- + arcēre, to restrain.]

ex′er·cis′a·ble adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
Rexahn has entered into a securities purchase agreement with these investors pursuant to which Rexahn has agreed to sell an aggregate of about 8.33m shares of its common stock and warrants exercisable for up to approximately 3.33m additional shares of its common stock.
The company has issued and allotted 49,180,000 ordinary shares following the exercise of 180,000 listed options exercisable at AUD0.277 per share, and 49,000,000 unlisted options exercisable at AUD0.327 per share.
678 trust, provided the surviving spouse's general power of appointment is exercisable during her lifetime, and not just at death (IRS Letter Ruling 8607044).
The offering consists of: (i) 2,855,500 shares of its Common Stock together with warrants to purchase 2,855,500 shares of its Common Stock, and (ii) 12,700,000 pre-funded warrants, with each pre-funded warrant exercisable for one share of Common Stock, together with Warrants to purchase 12,700,000 shares of its Common Stock.
Also, as of 31 October 2016, the total number of theoretical voting rights was 170,889,132, while the total number of exercisable voting rights was 168,675,750.
The warrants have an exercise price of USD2.19 per share of common stock and are exercisable beginning 181 days after the closing date of the offering, and are exercisable for five years after the date the warrants first become exercisable.
Initially, these Rights will not be exercisable and will trade with the company's Class A Common Stock and Class B Common Stock.
Also, as on 30 September 2016, the number of theoretical voting rights was 171,528,512, while the number of exercisable voting rights was 169,315,130.
Upon closing, the company issued and sold 162,500 shares of Series B-2 preferred stock convertible into 650,000 shares of common stock, a Class A-1 and a Class A-2 warrant each exercisable to purchase 325,000 shares of common stock and a Class B warrant exercisable to purchase 1,300,000 shares of common stock, for a gross purchase price of USD325,000.