different between ceiling vs downlight

English

Pronunciation

• IPA^(key): /?si?l??/
• Rhymes: -i?l??
• Homophone: sealing
• Hyphenation: ceil?ing

Etymology 1

From Middle English celing (“paneling; (bed) cover or hanging”), from celen (“to cover or panel walls”) (from Old French celer (“to conceal”)) + -ing (gerund-forming suffix).

Noun

ceiling (plural ceilings)

1. The overhead closure of a room.

2. The upper limit of an object or action.
   • 2008, N. Gregory Mankiw, Principles of Economics (volume 1, page 114)

     Market forces naturally move the economy to the equilibrium, and the price ceiling has no effect on the price or the quantity sold.

3. (aviation) The highest altitude at which an aircraft can safely maintain flight.
4. (meteorology) The measurement of visible distance from ground or sea level to an overcast cloud cover; under a clear sky, the ceiling measurement is identified as "unlimited."

5. (mathematics) The smallest integer greater than or equal to a given number.

6. (nautical) The inner planking of a vessel.
7. (finance) The maximum permitted level in a financial transaction.
8. (architecture) The overhead interior surface that covers the upper limits of a room.

Synonyms

• ceil (poetic)
• (mathematics): ceil

Antonyms

• floor

Derived terms

Translations

Etymology 2

Verb

ceiling

1. present participle of ceil

Anagrams

• cieling

English

Etymology

down +? light

Noun

downlight (plural downlights)

1. A light fixture installed in a hollow opening in a ceiling, concentrating the light in a downward direction.

Verb

downlight (third-person singular simple present downlights, present participle downlighting, simple past and past participle downlighted or downlit)

1. (transitive) To illuminate from above.

Anagrams

• light down