Definition

Noun: 1. The entry of foreign matter into a blood vessel: This is a medical term describing the process where a substance (such as cancer cells, bacteria, or other material) enters the circulatory system through a blood vessel wall.

Usage

This term is used almost exclusively in medical and biological contexts to describe a specific step in disease processes, particularly in oncology (the study of cancer) and pathology. - It is a technical noun and is not used in everyday conversation. - It typically describes an event or process.

Examples

• The intravasation of tumor cells is a critical step in the formation of metastases.
• Researchers are studying the mechanisms that facilitate the intravasation of bacteria into the bloodstream during severe infections.
• A key challenge in cancer treatment is preventing the intravasation of malignant cells.

Advanced Usage

• The term is often part of a sequence describing cancer metastasis: local invasion → intravasation → circulation → extravasation → metastatic growth.
• It can be modified by adjectives specifying the type of foreign matter: , .

Variants and Related Words

• Intravasate (verb, rare): The act of entering a blood vessel. (e.g., "The cells must intravasate to spread.")
• Extravasation (noun): The opposite process; the exit of matter a blood vessel into the surrounding tissues.
• Vasculature (noun): The network of blood vessels in an organ or body.

Synonyms

• Entry into the bloodstream (descriptive phrase, not a single word)
• Vascular entry (less specific)

Antonyms

• Extravasation (exit from a blood vessel)
• Containment (general opposite concept of being confined and not entering vessels)

Noun

1. entry of foreign matter into a blood vessel