Definition of Inactive

1. Adjective. (chemistry) not participating in a chemical reaction; chemically inert. "Desired amounts of inactive chlorine"

Category relationships: Chemical Science, Chemistry
Similar to: Unreactive
Derivative terms: Inactivity

2. Adjective. (pathology) not progressing or increasing; or progressing slowly.
Category relationships: Pathology
Similar to: Dead-end, Flat, Indolent, Latent, Quiescent
Antonyms: Active

3. Adjective. (military) not involved in military operations.
Exact synonyms: Nonoperational
Category relationships: Armed Forces, Armed Services, Military, Military Machine, War Machine
Antonyms: Operational

4. Adjective. Not exerting influence or change.
Similar to: Quiescent
Antonyms: Active

5. Adjective. (of e.g. volcanos) not erupting and not extinct. "A dormant volcano"
Exact synonyms: Dormant
Attributes: Dormancy, Quiescence, Quiescency
Similar to: Quiescent
Antonyms: Active
Derivative terms: Dormancy, Inactiveness, Inactivity

6. Adjective. Lacking in energy or will. "Much benevolence of the passive order may be traced to a disinclination to inflict pain upon oneself"
Exact synonyms: Passive
Attributes: Passiveness, Passivity
Similar to: Hands-off, Resistless, Supine, Unresisting
Derivative terms: Inactiveness, Inactivity, Passiveness, Passivity
Antonyms: Active

7. Adjective. Lacking activity; lying idle or unused. "Inactive machinery"
Similar to: Dark, Dead, Dull, Slow, Sluggish, Idle, Unused, Strikebound
Antonyms: Active
Derivative terms: Inactiveness, Inactivity

8. Adjective. Not engaged in full-time work. "An inactive member"
Similar to: Off, Retired
Antonyms: Active
Derivative terms: Inactivity

9. Adjective. Not active physically or mentally. "Dreamy and inactive by nature"

10. Adjective. Not in physical motion. "The inertia of an object at rest"
Exact synonyms: Motionless, Static, Still
Similar to: Nonmoving, Unmoving
Derivative terms: Inactivity, Motionlessness, Stillness

Definition of Inactive

1. a. Not active; having no power to move; that does not or can not produce results; inert; as, matter is, of itself, inactive.

Definition of Inactive

1. Adjective. Not active, temporarily or permanently ¹

2. Adjective. Not functioning or operating; broken down ¹

3. Adjective. Retired from duty or service ¹

4. Adjective. (chemistry) Relatively inert ¹

5. Adjective. (physics) Showing no optical activity in polarized light ¹

¹ Source:

Definition of Inactive

1. not active [adj]

Medical Definition of Inactive

1. Not active. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Inactive Pictures

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Lexicographical Neighbors of Inactive

inactivated polio vaccine
inactivated poliovirus vaccine
inactivated serum
inactive (current term)
inactive mutant
inactive repressor
inactive tuberculosis

Literary usage of Inactive

Below you will find example usage of this term as found in modern and/or classical literature:

1. Organic Chemistry for Advanced Students by Julius Berend Cohen (1918)
"The inactive Divisible Type. Thus, lactic acid from sour milk is ... Proof of this has been given by resolving the inactive acid into its two active ..."

2. Managing Industrial Solid Wastes from Manufacturing, Mining, Oil and Gas by DIANE Publishing Company (1995)
"Moreover, CERCLA may inhibit remining and cleaning up inactive and abandoned sites, contrary to the ' 'resource recovery' ' goal of RCRA. ..."

3. A Treatise on Chemistry by Henry Enfield Roscoe, Carl Schorlemmer (1884)
"The residue is converted into the acid potassium salt, when cream of tartar separates out, whilst the more soluble salt of the inactive acid remains in ..."

4. The Annual of Scientific Discovery, Or, Year-book of Facts in Science and Art by David Ames Wells, George Bliss, Samuel Kneeland, John Trowbridge, Charles Robert Cross (1860)
"It is a well-known fact, that the oxide of silver = Ag (— O), or the HO + (+0), catalyze each other into metallic silver, water, and inactive о о о oxygen. ..."

5. Records Relating to American Prisoners of War and Missing in Action from the edited by Charles E. Schamel (1997)
"1 This section describes four types of records: 1) inactive military personnel ecords retired to the National Personnel Records Center; 2) personnel records ..."

6. The Popular Science Monthly (1884)
"Previous to the Christian era, Vesuvius, covered with a rich vegetation, was wholly inactive. Nothing except the form of the mountain could give a suspicion ..."

7. Pharmaceutical Journal by Royal Pharmaceutical Society of Great Britain (1868)
"Some interesting experiments on this supposed inactive condition of matter were made by Herr Ziz, of Mayence, as long back as the year 1809, ..."

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