khối phấn
Definition
- Noun:
- A pollinium (plural: pollinia): In botany, specifically in certain plant families like orchids and milkweeds, a pollinium is a coherent mass of pollen grains that is transferred as a single unit during pollination.
Usage Examples
- Noun:
- Hoa lan có khối phấn dính, giúp quá trình thụ phấn nhờ côn trùng. (Orchids have sticky pollinia, aiding in insect-mediated pollination.)
- Khối phấn là một đặc điểm thích nghi quan trọng ở một số loài thực vật. (The pollinium is an important adaptive feature in some plant species.)
Advanced Usage
- Technical/Botanical Context: The term is almost exclusively used in specialized botanical texts, academic discussions, or descriptions of plant morphology and reproduction.
- Cấu trúc của khối phấn rất phức tạp. (The structure of the pollinium is very complex.)
Variants and Related Words
- Phấn hoa (n): Pollen. This is the general term for pollen grains, not formed into a cohesive mass.
- Hạt phấn (n): Pollen grain. Refers to individual pollen units.
Synonyms
- Khối phấn hoa: A slightly more descriptive variant meaning "mass of pollen".
- Phấn khối: A less common term with the same meaning.
Notes on Meaning
- This is a highly specialized scientific term (botanical terminology). It does not have common, everyday meanings or uses in general Vietnamese. The reference to "khối phấn" as a child's toy (a chalk cube) is a separate, homonymous compound word (khối + phấn) and is not the target word defined here, which is a single botanical term.