1.Definition: (biology) a group of organisms within a species that differ in trivial ways from similar groups

"A new strain of microorganisms"

Related Noun(s):form, variant

Category: General

2.Definition: (physics) deformation of a physical body under the action of applied forces

Category: General

3.Definition: (psychology) nervousness resulting from mental stress

"His responsibilities were a constant strain", "The mental strain of staying alert hour after hour was too much for him"

Category: General

4.Definition: a special variety of domesticated animals within a species

"He experimented on a particular breed of white rats", "He created a new strain of sheep"

Related Noun(s):breed, stock

Category: General

5.Definition: a succession of notes forming a distinctive sequence

Related Noun(s):air, line, melody, tune

Category: General

6.Definition: an effortful attempt to attain a goal

Related Noun(s):nisus, pains

Category: General

7.Definition: an intense or violent exertion

Category: General

8.Definition: difficulty that causes worry or emotional tension

"She endured the stresses and strains of life", "He presided over the economy during the period of the greatest stress and danger"

Related Noun(s):stress

Category: General

9.Definition: injury to a muscle (often caused by overuse); results in swelling and pain

Category: General

10.Definition: the act of singing

Related Noun(s):song

Category: General

11.Definition: the general meaning or substance of an utterance

Related Noun(s):tenor

Category: General