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active duty

1. Current, full-time service in the military. My son is in the army, and I worry so much when he's on active duty.
2. By extension, full-time service in another area of life. I'm still on active duty until I retire at the end of the month.
See also: active, duty

active shooter

A perpetrator (of a potential mass shooting) who is actively shooting at people, typically targeting victims in a crowded and confined space. If there is a report of an active shooter, police aim to respond within minutes. The police were quick to respond to the active shooter situation and disarm the attacker.
See also: active, shooter

on active duty

in battle or ready to go into battle. (Military.) The soldier was on active duty for ten months. That was a long time to be on active duty.
See also: active, duty, on

active duty

Full-time service, as in Julian is 81, but he still comes to the office every day and is very much on active duty . This term comes from the military, where it stands in opposition to reserve, which refers to troops still in the military but not actively engaged. It is occasionally transferred to civilian matters as well. [First half of 1800s]
See also: active, duty
References in periodicals archive ?
Drueke, Allen and Lorenzen have all documented the rise of the active learing movement.
It's true that active archiving and HSM both address the problem of explosive data growth by moving data to more cost-effective storage devices.
For this reason, blueshell Active Tables doesn't take a short-term wizard-based approach.
Past studies of AIDS-related risk behaviors among young men have yielded limited information, because they have grouped together homosexually and bisexually active males as "young men who have sex with men" and because they have not included adolescents.
The advantage the active trader has in electing MTM treatment under Sec.
Active Reasoning System 5 allows businesses to embed IT policy controls within business systems and applications to provide real-time change detection and configuration auditing.
One commonly accepted suggestion is to transform economics pedagogy from traditional lecture format to more active learning experience.
Lee sees three primary benefits of active archiving, including increasing performance by reducing size, reducing costs with less provisioning and manual intervention, and availability from faster backups and shortened maintenance time.
195(b)(1), the costs are amortizable over a period of not less than 60 months beginning with the month in which the active trade or business begins.
Together, Active Reasoning and Advanced MarketPlace will provide Fortune 500 organizations a closed-loop change management solution via Active Reasoning's integration with HP OpenView ServiceCenter.
A new data storage strategy, active archiving, combines the best of both the storage and database worlds.
0, a cross-platform identity management solution that provides seamless integration of Linux and UNIX users and systems with Microsoft Active Directory.
In addition, only about one-fourth of the organizations surveyed have developed an Active Directory design, although about 70% are assessing their current network as part of their Windows 2000 upgrade plan in apparent response to the sweeping changes in logical network structure demanded by Active Directory.
Active Reasoning, a leading provider of IT Governance Automation solutions, today announced that it has completed high-end multiprocessor optimization for its IT Governance Automation Platform on the IBM AIX operating system.
The partnership between the USTA and The Active Network will help us to continue to grow the sport of tennis throughout the nation," said Franklin Johnson, Chairman of the Board and President of the USTA.