lạc màu
Definition
- Adjective (Biology, Histology):
- Metachromatic: Exhibiting a change in color when stained with certain dyes. A substance or tissue is described as "lạc màu" when it stains a color different from that of the dye solution itself.
- Adjective (General):
- Off-color / Discolored: Having a color that is different from the expected, standard, or surrounding color. This can refer to an object, fabric, or material that has faded or changed hue unevenly.
Usage Examples
- Adjective (Biology):
- Các hạt lạc màu có thể quan sát dưới kính hiển vi. (Metachromatic granules can be observed under the microscope.)
- Mô sụn thường có tính lạc màu với thuốc nhuộm toluidine blue. (Cartilage tissue is often metachromatic with toluidine blue dye.)
- Adjective (General):
- Tấm vải này đã bị lạc màu sau nhiều lần giặt. (This fabric has become discolored after many washes.)
- Chiếc áo cũ có những mảng lạc màu trông rất cũ. (The old shirt has off-color patches that look very worn.)
Advanced Usage
- Technical Usage: In microbiology, "lạc màu" is a key characteristic for identifying certain bacteria, such as , which contains metachromatic granules.
- Sự hiện diện của các thể lạc màu là một đặc điểm chẩn đoán quan trọng. (The presence of metachromatic bodies is an important diagnostic feature.)
Variants and Related Words
- Phai màu (v): to fade, to lose color. This is a more common general term for color loss, whereas "lạc màu" often implies an unexpected or incorrect color change.
- Áo phông dễ bị phai màu. (T-shirts fade easily.)
- Loang lổ (adj): blotchy, uneven in color. Describes a surface with irregular patches of color, which may result from being "lạc màu."
- Bức tường sơn bị loang lổ. (The painted wall is blotchy.)
Synonyms
- Metachromatic (for scientific context).
- Discolored.
- Off-color.
- Faded.
Related Idioms
- Chỗ đậm chỗ nhạt: Literally "some spots dark, some spots light," meaning uneven or patchy in color or intensity.
- Bức tranh bị chỗ đậm chỗ nhạt. (The painting has uneven coloration.)