ceil

The pilot will ceil the aircraft to its maximum altitude.

Definition

1. Verb:

   • To provide with a ceiling: "ceil" means to construct or cover the interior upper surface of a room (a ceiling). It is a rare and technical verb, primarily used in construction or architecture.
   • To line or finish the ceiling of (a room): This involves applying materials like plaster, wood, or panels to the top interior surface of a space.

2. Noun (rare, technical):

   • A ceiling or upper limit: In very specific contexts (e.g., aviation or mathematics), "ceil" can refer to the maximum altitude an aircraft can reach or the upper boundary of a set. However, this is highly specialized and not common in everyday language.

Usage Examples

• Verb:

  • The contractor will ceil the new library hall with acoustic panels. (To construct and finish the ceiling of the library hall.)
  • They decided to ceil the kitchen with wooden planks for a rustic look. (To line the kitchen's upper surface with wood.)

• Noun:

  • The aircraft's operational ceil is 35,000 feet. (The maximum altitude it can fly.)
  • In mathematics, the ceil of 4.2 is 5. (The smallest integer greater than or equal to 4.2; more commonly written as "ceiling function.")

Advanced Usage

• "to ceil a debt": An archaic or very rare usage meaning to set a limit or cap on a debt.

  • The agreement ceiled the loan at $10,000. (Set a maximum limit on the loan amount.)

• "ceil function": In mathematics and computer science, the function that rounds a number up to the nearest integer. This is commonly written as "ceil()" in programming.

  • Using the ceil function, the value 3.2 becomes 4. (The function rounds 3.2 up to the nearest whole number.)

Variants and Related Words

• Ceiling (n): The more common word for the upper interior surface of a room, or an upper limit.

  • The ceiling of the room is painted white. (The upper surface of the room.)

• Ceiled (adj): Having a ceiling of a specified type.

  • The ceiled room felt warmer than the unceiled attic. (The room with a finished ceiling.)

• Ceilinged (adj): Having a ceiling (often used in compounds like "high-ceilinged").

  • The high-ceilinged hall echoed with music. (The hall had a tall ceiling.)

Synonyms

• Cap: to set an upper limit (for the noun sense of "ceil" as a limit).

  • The company ceiled executive bonuses. (Set a cap on bonuses.)

• Line: to cover the interior surface (for the verb sense of constructing a ceiling).

  • They lined the ceiling with insulation. (Covered the ceiling surface.)

• Finish: to complete the surface treatment of a ceiling.

  • The plasterers finished the ceiling smoothly. (Completed the ceiling's surface.)

Related Idioms

• Hit the ceiling: to become very angry (idiom using "ceiling," not "ceil").

  • When he saw the broken vase, he hit the ceiling. (Became extremely angry.)

• Glass ceiling: an unacknowledged barrier to advancement in a profession (idiom using "ceiling").

  • Many women face a glass ceiling in corporate leadership. (An invisible barrier to promotion.)