Drop
A drop is a small unit of volume typically used in medicine, cooking, and chemistry to measure very small amounts of liquid.
The volume of a drop varies depending on the liquid and the dropper used but is often approximated as about 0.05 milliliters (mL) or 20 drops per milliliter.
Summary:
Approximate volume ≈ 0.05 mL
Used for small liquid measurements like medication doses
Volume can vary with liquid type and dropper design