Definition

1. Adjective:
   • Without blood vessels: Describes biological tissue or an area of the body that lacks a network of blood vessels (arteries, veins, and capillaries) for supplying blood.

Usage

• The term "avascular" is primarily used in medical and biological contexts to describe tissues that do not contain or are not supplied by blood vessels. It is a technical adjective.
• It is often used to explain why certain tissues heal slowly or have specific physiological properties.

Examples

• Adjective:
  • The cornea of the eye is avascular, receiving nutrients from tears and aqueous humor.
  • Cartilage is an avascular tissue, which contributes to its limited capacity for self-repair.
  • The surgeon noted the avascular nature of the tumor's core.

Advanced Usage

• "Avascular necrosis": A medical condition where bone tissue dies due to a lack of blood supply.
  • Osteonecrosis, also known as avascular necrosis, is a serious joint condition.

Variants and Related Words

• Vascular (adj): Having or relating to blood vessels. This is the direct antonym of "avascular."
  • Muscle tissue is highly vascular.
• Avascularity (n): The state or condition of being without blood vessels.
  • The avascularity of the lens is crucial for its transparency.

Synonyms

• Non-vascular: Lacking vessels, especially blood vessels. (Note: In botany, "non-vascular" refers to plants like mosses that lack specialized conducting tissues.)
• Ischemic: Specifically relating to a deficiency of blood supply to a tissue. While related, "ischemic" implies a in blood flow, not a complete absence.

Antonyms

• Vascular: Pertaining to, composed of, or provided with vessels that convey fluids, such as blood or sap.

Adjective

1. without blood vessels