Plane

Definition

Plane is a noun, verb, and adjective. As a noun, it refers to a flat surface, a level of existence, or an aircraft. As a verb, it means to smooth a surface using a tool. As an adjective, it describes something flat or level.

Parts of Speech

• Noun
• Verb
• Adjective

Pronunciation

American English

• IPA Pronunciation: /pleɪn/
• Respelling: PLAYN

British English

• IPA Pronunciation: /pleɪn/
• Respelling: PLAYN

Etymology

The word "plane" originates from Latin "planus," meaning "flat" or "level." It was adopted into Middle English through Old French in the 14th century, with meanings relating to flat surfaces and smoothing tools. The modern sense of "airplane" emerged in the early 20th century from "aeroplane."

Derivatives

• Planar (adjective)
• Planed (verb, past tense)
• Planing (verb, present participle)
• Airplane (noun)
• Hydroplane (noun, verb)

Synonyms

• Aircraft (contextual)
• Flat surface
• Level

Antonyms

• Irregularity
• Unevenness
• None (for aircraft context)

Usage

The term "plane" is used in geometry, aviation, and carpentry. For example: "The carpenter used a plane to smooth the wood," or "The plane landed safely on the runway."

Related Terms

• Flat: A level surface or structure.
• Aircraft: A broader category of flying vehicles.
• Geometry: The study of shapes and spaces, often involving planes.

Detailed Definitions

Noun

• A flat surface: Refers to a two-dimensional surface extending infinitely.
  • Example: "The design was drawn on a geometric plane."
• An aircraft: Refers to a powered flying vehicle.
  • Example: "The plane took off from the airport at noon."
• A level of existence or thought: Refers to a metaphorical or conceptual level.
  • Example: "The discussion moved to a higher plane of understanding."

Verb

• To smooth a surface: Refers to using a tool to make a surface flat.
  • Example: "The carpenter planed the rough edges of the table."

Adjective

• Flat or level: Describes a surface without elevation or depression.
  • Example: "The plane surface was perfect for drawing."