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tier

A tier is a level or a layer. If you sit in the top tier of seats at a concert, you can see the whole stage and most of the audience — but you probably have to climb lots of stairs.

A tier can describe a layer of ruffles on a dress, a section of seats in a stadium, or one layer of a fancy cake. You could also talk about a tier in terms of value or position. For example, the most popular, well-known actors might be considered part of the top tier, getting all the best parts. Tier originated from the Old French word tire: rank, sequence, or order.

PRIMARY MEANINGS OF: tier

1
n
one of two or more layers one atop another
2
n
any one of two or more competitors who tie one another
3
n
a worker who ties something
FULL DEFINITIONS OF: tier
1

n one of two or more layers one atop another

tier upon tier of huge casks”
“a three-tier wedding cake”
Type of:
bed, layer
single thickness of usually some homogeneous substance

n a relative position or degree of value in a graded group

Synonyms:
grade, level
Types:
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biosafety level
the level of safety from exposure to infectious agents; depends on work practices and safety equipment and facilities
A level
the advanced level of a subject taken in school (usually two years after O level)
GCSE, General Certificate of Secondary Education, O level
the basic level of a subject taken in school
college level
the level of education that college students are assumed to have attained
biosafety level 1
exposure only to infectious agents that do not ordinarily cause human disease
biosafety level 2
exposure to infectious agents that can cause disease in humans but whose potential for transmission is limited
biosafety level 3
exposure to infectious agents that can be transmitted by the respiratory route and which can cause serious infection
biosafety level 4
exposure to exotic infectious agents that pose a high risk of life-threatening disease and can be transmitted as an aerosol and for which there is no vaccine or therapy
Type of:
rank
relative status
2

n any one of two or more competitors who tie one another

Type of:
challenger, competition, competitor, contender, rival
the contestant you hope to defeat
3

n a worker who ties something

Synonyms:
tier up
Type of:
worker
a person who works at a specific occupation

n something that is used for tying

“the sail is fastened to the yard with tiers
Type of:
rope
a strong line
WORD FAMILY
USAGE EXAMPLES