Definition: A compound derived from hemoglobin, often used in biological and medical contexts.

Example: Haematin is important in the study of blood and its components.

Definition: A type of iron ore that is dark red or black and is used in making iron and steel.

Example: The geologist found a large deposit of haematite in the mountain.

Definition: A compound derived from hemoglobin, often used in biochemical research and as a reagent.

Example: The scientist used haemin to study the properties of hemoglobin in the lab.

Definition: A shiny, silver-colored metal that is used in various applications, including nuclear reactors and making certain types of filaments.

Example: Hafnium is often used in control rods for nuclear reactors due to its ability to absorb neutrons.

Definition: A thin, coiled spring used in watches and clocks to control the movement of the balance wheel.

Example: The watchmaker carefully adjusted the hairspring to ensure the timepiece kept accurate time.

Definition: A blurring or spreading of light around bright areas in images, often seen in photography or on screens.

Example: The photographer adjusted the settings to reduce the halation effect in the bright areas of the photo.

Definition: A chemical compound used as a disinfectant to purify water by killing bacteria and other harmful microorganisms.

Example: Halazone is often used in emergency situations to make water safe for drinking.

Definition: A period of time in which half of a substance, such as a radioactive material, decays or is eliminated from a system.

Example: The half-life of carbon-14 is about 5,730 years, which is used in dating ancient artifacts.

Definition: A type of chemical compound formed when a halogen combines with a more positively charged element or group.

Example: Sodium chloride is a common example of a halide.

Definition: A type of rope or line used to raise or lower a sail or flag on a ship.

Example: The sailor pulled on the halliard to hoist the flag up the mast.