air-cell

air-cell

A single air-cell in the lung is shown in a detailed cross-section.

Definition

Noun: - A small cavity or sac containing air: In anatomy, an "air-cell" refers to a tiny, air-filled space within the body, most notably the alveoli in the lungs where gas exchange occurs. - A cellular space in certain plants or materials: In botany or manufacturing, an "air-cell" can be a small, enclosed pocket of air within plant tissue (e.g., in leaves or stems) or within materials like foam or rubber, providing buoyancy or insulation.

Usage Examples
  • (The small sacs in the lungs allow gas exchange.)
  • (The small air pockets keep the jacket afloat.)
  • (The tiny cavities in the leaf store air.)
Advanced Usage

  • "pulmonary air-cell": A technical term for an alveolus in the respiratory system.

    • The pulmonary air-cells are lined with capillaries to absorb oxygen. (The lung sacs are surrounded by tiny blood vessels.)

  • "air-cell inflation": The process of filling these cavities with air, often used in contexts like diving or material science.

    • During deep-sea diving, proper air-cell inflation in the suit is crucial for pressure balance. (The air pockets in the suit must be filled correctly.)
Variants and Related Words
  • Air cell (alternative spelling): Often written as two words, meaning the same thing.
    • The air cell in the egg becomes larger as it ages. (The pocket of air inside the eggshell expands over time.)
  • Alveolus (n): A specific type of air-cell in the lungs.
    • Each alveolus is an air-cell where gas exchange occurs. (A tiny lung sac.)
Synonyms
  • Alveolus: A small cavity, especially in the lungs.
  • Air pocket: A general term for a small, enclosed space filled with air.
  • Vesicle: A small, fluid- or air-filled sac in an organism.
Related Idioms
  • "An air cell in the brain": A figurative phrase (rare) suggesting a lack of intelligence or a foolish idea, though not common.
    • His plan sounded like an air cell in the brain — full of empty space. (His idea seemed nonsensical or hollow.)
Phrasal Verbs
  • "Fill with air-cells": To create or incorporate small air pockets.
    • The manufacturer fills the foam with air-cells to make it lightweight. (The company adds air pockets to the foam.)