Browse Lemmas

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prohibition

The historical period in the United States, from 1920 to 1933, when the production, sale, and transport of alcoholic beverages were constitutionally b...

Noun time_period Level 1070
half-century

A period of fifty years.

Noun time_period Level 1120
half-hour

A period of thirty minutes.

Noun time_period Level 1120
mid-september

The middle part of September, usually around September 15 or the period shortly before and after that date.

Noun time_period Level 1120
night-time

The period of darkness between sunset and sunrise.

Noun time_period Level 1120
stoppage time

In association football, the additional time played at the end of a half to make up for time lost during the half.

Noun time_period Level 1200
middlegame

The middlegame is the phase of a chess game after the opening, when players develop plans and fight for advantage before the endgame.

Noun time_period Level 1202
opening

The opening is the first phase of a chess game, when players develop their pieces and compete for control of the center.

Noun time_period Level 1202
anniversary

The yearly recurrence of the date on which an event, organization, or institution was established or began.

Noun time_period Level 1399
college

The period during which someone studies at a college or university.

Noun time_period Level 1399
half-life

The time required for half the atoms in a sample of a radioactive substance to decay.

Noun time_period Level 1399
half-life

The time it takes for the amount or concentration of a substance in a system to decrease by half.

Noun time_period Level 1399
incubation period

The time between infection by a disease-causing organism and the onset of symptoms.

Noun time_period Level 1399
lifespan

The length of time that a person, animal, plant, object, or system exists or remains functional.

Noun time_period Level 1399
lifetime

A very long period of time spent experiencing or devoted to something.

Noun time_period Level 1399
maturity date

The date on which a financial instrument becomes due for repayment.

Noun time_period Level 1399
present

The time that is happening now, as opposed to the past or the future.

Noun time_period Level 1399
probationary period

A limited period during which a person or thing is tested before a decision is made about continuing or accepting them.

Noun time_period Level 1399
quarter hour

A period of fifteen minutes, equal to one quarter of an hour.

Noun time_period Level 1399
reign

A period in which a person, group, or thing is dominant, influential, or highly successful.

Noun time_period Level 1399
run-up

The period of activity or preparation immediately before an important event.

Noun time_period Level 1399
service life

The period during which a product, system, or other thing exists or remains in use.

Noun time_period Level 1399