a+long+period+of+time

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• period of time — noun an amount of time (Freq. 7) a time period of 30 years hastened the period of time of his recovery Picasso s blue period • Syn: ↑time period, ↑period • Hypernyms: ↑ …   Useful english dictionary

• period of time —    A curiously irresistible expression for many writers, as here: Roth maintained that the problem was not new at all, but rather had been going on for a considerable period of time (Washington Post). Shortening it to for a considerable period or …   Dictionary of troublesome word

• Long-term potentiation — (LTP) is a persistent increase in synaptic strength following high frequency stimulation of a chemical synapse. Studies of LTP are often carried out in slices of the hippocampus, an important organ for learning and memory. In such studies,… …   Wikipedia

• period — period, epoch, era, age, aeon all denote a portion or division of time; epoch and era can also denote an event regarded as the beginning of a portion or division of time. Period is the generic term, designating an extent of time of any length for …   New Dictionary of Synonyms

• long-term — long′ term adj. 1) covering or involving a relatively long period of time: long term memory[/ex] 2) maturing after a relatively long period of time: a long term bond[/ex] 3) bus (of a capital gain or loss) derived from the sale or exchange of an… …   From formal English to slang

• long-stay — adj [only before noun] BrE 1.) relating to care or treatment over a long period of time long stay hospital/ward/bed etc long stay patient/resident 2.) a long stay car park is a place where people can leave their cars for a long period of time ≠… …   Dictionary of contemporary English

• long-lasting — long′ last′ing adj. 1) cvb enduring or existing for a long period of time: a long lasting friendship[/ex] 2) cvb effective for a relatively long period of time: a long lasting pain reliever[/ex] • Etymology: 1520–30 …   From formal English to slang

• long haul — noun count a long period of hard work: The meat trade faces a long haul back to profitability. in something for the long haul determined to continue with something until it is finished successfully over the long haul over a long period of time:… …   Usage of the words and phrases in modern English

• long-term — W3 adj [usually before noun] continuing for a long period of time into the future, or relating to what will happen in the distant future ≠ ↑short term ▪ the long term future of the fishing industry ▪ the long term interests of the company the… …   Dictionary of contemporary English

• long-run — UK US adjective [before noun] ► continuing to exist or have an effect for a long period of time: long run growth/inflation/potential »Spending on public services helps long run economic growth. »Consumer confidence is well above its long run… …   Financial and business terms

• long-day plant — noun A plant that will only flower after being exposed to conditions of long days and short nights • • • Main Entry: ↑long * * * long day plant «LNG DAY, LONG », a plant that flowers only when exposed to light for a relatively long period of time …   Useful english dictionary