Definition

1. Adjective:

   • Having two cusps or pointed projections. This term is most commonly used in anatomy and dentistry to describe teeth, but can also apply to other structures like leaves.

2. Noun:

   • A tooth with two cusps, specifically one of the premolar teeth located between the canine teeth and the molars in the human dental arch.

Usage Examples

• Adjective:

  • The dentist noted the patient's bicuspid tooth had a distinct groove between its two points.
  • The plant was identified by its bicuspid leaves.

• Noun:

  • A cavity often forms in the deep fissure of a bicuspid.
  • The orthodontist is adjusting the position of the lower right first bicuspid.

Advanced Usage

• In formal dental terminology, the terms premolar and bicuspid are often used interchangeably, though premolar is more precise in human dentistry as it denotes the tooth's position.
  • The maxillary first bicuspid typically has two well-defined cusps.

Variants and Related Words

• Bicuspidate (Adjective): A less common synonym meaning having two cusps or points.
• Premolar (Noun): The technical anatomical term for the bicuspid teeth in humans.

Synonyms

• Adjective: Two-pointed, bicuspidate.
• Noun: Premolar.

Related Phrases

• Bicuspid valve: An older, non-standard term for the of the heart, which has two flaps (cusps). (Note: This is a compound term listed here as a related phrase; the core explanation remains on the single word 'bicuspid').
  • Historical texts might refer to the bicuspid valve, though modern terminology is 'mitral valve'.

Adjective

1. having two cusps or points (especially a molar tooth)
   • bicuspid teeth
   • bicuspid leaves

Noun

1. a tooth having two cusps or points; located between the incisors and the molars