Definition of riser in English:

riser

Line breaks: riser
Pronunciation: /ˈrʌɪzə
 
/

noun

1 [with adjective] A person who habitually gets out of bed at a particular time of the morning: late risers always exasperate early risers
More example sentences
  • The habitual early riser laid in bed and slept till almost noon for the first time in her life.
  • My aunt is the only early riser of the house, up before first light most mornings, so at least there was coffee already percolating and breakfast being made.
  • Phil was an early morning riser and by now had no doubt probably made breakfast.
2A vertical section between the treads of a staircase: make risers low and treads deep
More example sentences
  • In all the houses, suspended straight-flight stairs have treads and risers made of continuous sheets of folded steel with flat steel stringers.
  • The more solid platforms and staircase contrast with the lightness of the ribbed enclosure, but the risers of the staircase are left open to maximise views.
  • The tread and riser of each step is proportionately different so that consecutive steps require slightly different muscular effort, which Steele thought would reduce fatigue.
3A vertical pipe for the upward flow of liquid or gas: this pressure carries water through the risers to the upper floors the main gas riser there was relocated
More example sentences
  • The buried valve allowing them to drain and avoid freezing can allow bacterially contaminated water to be drawn into the riser pipe leading to the hydrant.
  • Except for the 3 acres on raised beds with plastic mulch and drip tape, we use two movable aluminum pipe systems with sprinklers on risers to cover the farm.
  • Two independent permanent power supplies serve the building with dual risers to each floor.
4A low platform on a stage or in an auditorium, used to give greater prominence to a speaker or performer: he fell backwards off the riser half a drum riser collapsed during my solo
More example sentences
  • A slight stumble going down the risers to leave the stage did not mar the performance at all.
  • As the main stage curtain lifted, the tiny singer appeared a top the drum riser, clad in a bright yellow T-shirt that read ‘Halls’ and a pair of black pants adorned with all sorts of silver hardware.
  • Bored and not that impressed as the set began to wrap up, I saw the drum riser slowly rose to about 15 feet off the ground.
5A strip of webbing joining the harness and the rigging lines of a parachute or paraglider: constantly adjust the risers to keep the wing overhead

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