Definition

1. Noun:
   • Vitality, vital force: "Hoạt lực" refers to the inherent capacity for life, growth, and activity; the vital energy or power within a living organism.
   • Efficacy, potency: In a specialized context (often in medicine or pharmacology), "hoạt lực" denotes the therapeutic power or effectiveness of a substance (e.g., a drug, herb) on a living body.

Usage Examples

• Noun:
  • Người già ấy vẫn còn nhiều hoạt lực. (That elderly person still possesses much vitality.)
  • Các nhà khoa học đang nghiên cứu hoạt lực của loại thảo dược này. (Scientists are researching the potency of this herbal medicine.)

Advanced Usage

• "Hoạt lực cao": high potency, high efficacy.
  • Thuốc này có hoạt lực cao nên chỉ cần dùng liều nhỏ. (This medicine has high potency, so only a small dose is needed.)

Variants and Related Words

• Hoạt chất (n): active ingredient, active principle. This is the specific chemical compound responsible for the "hoạt lực" of a substance.
  • Hoạt lực của thuốc phụ thuộc vào hàm lượng hoạt chất. (The drug's potency depends on the concentration of its active ingredient.)

Synonyms

• Sức sống: vitality, life force.
• Hiệu lực: efficacy, effectiveness (more general, not limited to biological contexts).
• Tác dụng: effect, action.

Notes on Usage

• The word "hoạt lực" is marked as somewhat archaic or literary in modern Vietnamese. In contemporary language, words like "sức sống" (for vitality) or "hiệu lực"/"tác dụng" (for efficacy) are more commonly used in everyday speech.
• Its specialized use in medicine, pharmacology, or biology to describe the biological activity or therapeutic power of a substance remains current and technical.

1. (từ cũ; nghĩa cũ) Vitality