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active

active

44 3.2
Causing a direct effect, as with a medicine ingredient
  • adjective
  • /ˈæktɪv/
  • Specialized
translation icon : activo
  • Oxygen is an active component in supporting life on Earth.
  • an active ingredient
  • biologically active
  • an active drug

It's one of the active ingredients in green tea.

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Examples

  • Further analyses included only participants who reported being physically active at the time of the study.

    Academic text (1999)
  • An average CEA, which indicates the amount of active cancer in your body, measures zero to five.

  • It's one of the active ingredients in green tea.

  • This is the active ingredient of the drug.

  • Muscle is metabolically active throughout your day.

  • We'll be selling five separate creams of increasing strengths according to the concentration of the active ingredient.

  • To sustain these important mentorship relationships, it is important to be an active participant in the teaching process.

    Academic text (2013)
  • Caffeine is one of the most active elements in energy drinks.

  • The researchers identified several active substances that can enhance plant growth.

Antonyms

16 3.0

Not taking part in an activity, job, or group

3 2.7

Not active now but likely to start again later

inactive
  • Specialized
1 6.0

Not taking part in a chemical reaction

Compounds

active site
  • Specialized
1 4.0

A part of an enzyme or antibody where molecules attach and reactions start

active voice
  • Specialized
1 3.7

A sentence where the subject does the action

active agent
  • Specialized
1 4.2

A substance that directly changes how a body or germ works

A person who helps with and joins local community projects like volunteering and neighborhood watch

active power
  • Specialized
1 4.9

Energy in an electrical circuit that does useful work, like turning motors or lighting lamps

active air defense
  • Specialized
1 6.1

A way of protecting an area from enemy planes or missiles using weapons and electronic systems to stop them

active birth
  • Specialized
3.6

Childbirth in which the mother moves and changes position to help labor

active application
  • Specialized
4.3

A computer program that is running and showing on the screen so you can use it

active capital
  • Specialized
4.9

Money or property that can be quickly turned into cash and used in business

active immunity
  • Specialized
3.9

Protection your body makes using antibodies after an infection or vaccine

9.9

A way some fish find objects by making a weak electric field and sensing changes in the field

active placebo
  • Specialized
6.6

A fake treatment that causes side effects like a real drug to keep people in the trial unaware

active matrix screen
  • Specialized
5.1

A screen that uses a small electronic part for each tiny dot to make images sharper and faster

active subwoofer
  • Specialized
5.6

A speaker with a built-in amplifier that makes low bass sounds

active transport
  • Specialized
3.9

To move a substance across a cell membrane from low to high concentration using energy

active transport
  • Specialized
3.5

Travel by walking or cycling for everyday trips

active trust
  • Formal
7.3

A way of holding property where the person in charge must manage it and act for the people who benefit

A treatment for HIV that uses several medicines to lower the amount of virus in the body

surface-active agent
  • Specialized
6.9

A chemical in soaps and detergents that helps water mix with oil

How Active

potent
119 5.5
active
  • Specialized
44 3.2
inert
  • Specialized
14 5.9

Surface Forms

active positive

Morphology

active = act (transparent) = act + ive

Standard adjective formation from the verb 'act' with the productive suffix '-ive', yielding 'performing or causing action'.

Etymology

Active comes from the old Latin root act meaning 'to do'. An active ingredient is the part of a medicine or product that actually 'does' the change or effect.