noun
riser
REYE-zuh
noun
1
Someone who gets out of bed, especially described by how early or late.
"She has always been an early riser, up before dawn."
2
A raised platform used to lift performers, speakers, or equipment above floor level.
"The choir stood on risers so every row was visible."
3
The vertical front face of a stair step, as opposed to the flat part you step on.
"He measured the riser height before ordering the staircase parts."
"Building codes limit how tall each riser can be."
4
A vertical pipe or duct running between floors of a building, carrying cables, water, or gas.
"Electricians ran the new cabling up the utility riser."
How to Use Riser
Learner’s notesIn plain EnglishDepending on context: a person who gets up (as in "early riser"), a raised platform, the vertical part of a stair, or a vertical service pipe/duct in a building.
Common pairings
early riser
stage riser
stair riser
utility riser
Word Forms
risers plural, Risers plural
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She has always been an early _____, up before dawn.
Etymology
"Rise" plus the agent suffix "-er," originally meaning simply "one who rises."