Definition

1. Noun:
   • A small, often nipple-like projection of tissue: In anatomy and biology, a "papilla" is a small, rounded protuberance found on the body of an animal or plant.
   • A sensory structure: Specifically, it can refer to a small protuberance on the tongue, skin, or other organs that is involved in sensations like taste, touch, or smell.
   • A botanical outgrowth: In botany, a "papilla" is a tiny, often microscopic, projection on the surface of a petal or leaf.

Usage Examples

• Noun:
  • The dermal papilla at the base of the hair follicle is crucial for hair growth.
  • Fungiform papillae on the tongue contain taste buds.
  • Under the microscope, the leaf's surface was covered in minute papillae.

Advanced Usage

• "Gustatory papilla": a papilla on the tongue associated with the sense of taste.
  • Circumvallate papillae are a type of gustatory papilla located at the back of the tongue.
• "Dermal papilla": a small, finger-like projection of the dermis into the epidermis, often associated with hair follicles.
  • The health of the dermal papilla determines the growth cycle of a hair.

Variants and Related Words

• Papillary (adj): relating to, resembling, or having papillae.
  • The papillary layer is a region of the dermis.
• Papillate (adj): covered with or having papillae.
  • The plant's stem had a papillate texture.
• Papilloma (n): a benign tumor derived from epithelium, often with a nipple-like surface.
  • A skin papilloma is commonly known as a wart.

Synonyms

• Nipple: (specifically for the anatomical shape)
• Protuberance: a thing that protrudes from something else.
• Tubercle: a small rounded projection or protuberance, especially on a bone.

Related Phrases

• Lingual papilla: a papilla located on the tongue.
  • Filiform papillae are the most numerous type of lingual papilla.
• Renal papilla: the apex of a renal pyramid in the kidney.
  • The ducts of Bellini open at the renal papilla.

Noun

1. a small projection of tissue at the base of a hair or tooth or feather
2. a small nipple-shaped protuberance concerned with taste, touch, or smell
   • the papillae of the tongue
3. (botany) a tiny outgrowth on the surface of a petal or leaf