TRIANGULAR

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 Dictionary entry overview: What does triangular mean? 

• TRIANGULAR (adjective)
  The adjective TRIANGULAR has 2 senses:

1. having three angles; forming or shaped like a triangle

2. having three sides

  Familiarity information: TRIANGULAR used as an adjective is rare.

 Dictionary entry details 

• TRIANGULAR (adjective)

Sense 1

Meaning:

Having three angles; forming or shaped like a triangle

Context example:

a triangular pyrimid has a triangle for a base

Similar:

angular; angulate (having angles or an angular shape)

Derivation:

triangle (a three-sided polygon)

triangularity (the property of being shaped like a triangle)

Sense 2

Meaning:

Having three sides

Synonyms:

three-sided; triangular; trilateral

Context example:

a trilateral figure

Similar:

many-sided; multilateral (having many parts or sides)

Derivation:

triangle (a three-sided polygon)

triangularity (the property of being shaped like a triangle)

 Context examples 

The ears are triangular and set high and are well back from the skull.

(Nova Scotia Duck-Tolling Retriever, NCI Thesaurus)

Either of the two triangular ligaments (left or right) extending from the diaphragm to the liver.

(Lateral Ligament, NCI Thesaurus)

A triangular muscle in the back, connected to the vertebral column, arm, and shoulder.

(Musculus Latissimus Dorsi, NCI Thesaurus)

The Ibizan Hound is an agile, deer-like, athletic hound that has a long, arched neck, long wedge-shaped head, and very large, triangular ears which stand up when the dog is alert.

(Ibizan Hound, NCI Thesaurus)

For a moment I wondered where I could have seen that ungainly shape, that arched back with triangular fringes along it, that strange bird-like head held close to the ground.

(The Lost World, by Sir Arthur Conan Doyle)

Its lumen is roughly triangular and has average diameter of 2-3 mm.

(Eustachian Tube, NCI Thesaurus)

The small triangular ears are pendant.

(Newfoundland, NCI Thesaurus)

A small flat triangular bone in front of the knee that articulates with the femur and protects the knee joint.

(Patella, NCI Thesaurus)

A type of osteogenesis imperfecta characterized by bone fractures, bone deformities, short stature, poor muscle development, barrel-shaped chest, and triangular face.

(Osteogenesis Imperfecta Type III, NCI Thesaurus)

A triangular shaped structure, i.e., one of the triangular segments of heart valve or a raised area of the biting surface of a tooth.

(Cusp, NCI Thesaurus)