ceil: meaning, definition, pronunciation and examples
LowFormal, Technical
Quick answer
What does “ceil” mean?
to provide with a ceiling.
Audio
Pronunciation
Definition
Meaning and Definition
to provide with a ceiling; to cover or line the interior upper surface of (a room or building). In mathematics, to round a number up to the nearest integer.
In an architectural or construction context: to install or finish an overhead interior surface. Figuratively: to set an upper limit on something. In computing/graphics: the ceiling function operation.
Dialectal Variation
British vs American Usage
Differences
No significant difference in core meaning. The verb is rare in both dialects. Architectural usage is marginally more likely in UK historical/restoration contexts.
Connotations
Technical, precise. Can sound archaic or overly formal in non-specialist speech.
Frequency
Extremely low frequency in general usage. Higher frequency in mathematical, programming, and architectural texts.
Grammar
How to Use “ceil” in a Sentence
[Subject: builder/architect] + ceil + [Object: room/space] (e.g., They will ceil the gallery.)[Subject: function/operation] + ceil + [Object: number/value] (e.g., The formula ceils the result.)Vocabulary
Collocations
Examples
Examples of “ceil” in a Sentence
verb
British English
- The craftsmen will ceil the medieval hall with traditional oak panels.
- This function ceils any decimal to the nearest integer.
American English
- The contract requires the contractor to ceil the lobby with soundproofing material.
- Use `math.ceil()` to ensure the value is rounded up.
adverb
British English
- N/A - No standard adverbial form.
American English
- N/A - No standard adverbial form.
adjective
British English
- The newly-ceiled vault looked magnificent.
- The ceiled porch offered protection from the rain.
American English
- The ceiled basement added valuable living space.
- They admired the intricately ceiled ceiling.
Usage
Meaning in Context
Business
Rare. Possibly in construction project management: 'The contract states they will ceil the atrium with acoustic tiles.'
Academic
Common in mathematics, computer science, and architecture papers.
Everyday
Virtually never used. The noun 'ceiling' is used instead.
Technical
Primary domain. Architectural specifications and software documentation (e.g., Python's `math.ceil()` function).
Watch out
Common Mistakes When Using “ceil”
- Using 'ceiling' as a verb (e.g., 'They will ceiling the room.'). Incorrect. Use 'ceil'.
- Confusing 'ceil' (up) with 'floor' (down) in mathematics.
- Misspelling as 'seal' (which means to close tightly).
FAQ
Frequently Asked Questions
No, it is a low-frequency, technical verb. Its noun form 'ceiling' is overwhelmingly more common.
'Ceil' is a verb meaning to install a ceiling. 'Ceiling' is a noun referring to the overhead surface itself or an upper limit.
It is a standard mathematical function (e.g., `Math.ceil()` in JavaScript, `math.ceil()` in Python) that rounds a floating-point number up to the next largest integer.
No, this is a common error. 'Ceiling' is not a standard verb. The correct verb form is 'ceil', though it is very rare outside technical fields.
to provide with a ceiling.
Ceil is usually formal, technical in register.
Ceil: in British English it is pronounced /siːl/, and in American English it is pronounced /siːl/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “hit the ceiling (related to noun 'ceiling', not verb 'ceil')”
Learning
Memory Aids
Mnemonic
Think: 'SEAL' the top. You 'ceil' a room to 'seal' it with a top surface. For math: 'ceil' sounds like 'seal' the number up to the next whole one.
Conceptual Metaphor
UPPER LIMIT IS A COVER. Providing a ceiling is providing an upper cover. In math, moving a number upward is like placing it under a fixed ceiling.
Practice
Quiz
In which context would the verb 'ceil' be LEAST likely to be used?