Definition: Relating to or resembling a star-like shape, often used to describe certain marine animals or structures that have a radial symmetry.

Example: The actinoid structure of the sea star allows it to capture prey effectively.

Definition: A type of mineral that is usually green or grayish-green, belonging to the amphibole group. It is made up of silicate compounds containing calcium, magnesium, and iron, and can be found in different shapes like fibrous or columnar.

Example: The geologist identified the actinolite in the rock sample as a significant indicator of metamorphic conditions.

Definition: A device used to measure the strength of radiation, especially sunlight, often used in weather studies.

Example: The scientist used an actinometer to measure the intensity of sunlight during the experiment.

Definition: Relating to the measurement of light intensity, especially in terms of its effect on photosynthesis or other processes.

Example: The actinometric measurements were crucial for the solar energy study.

Definition: This is the process of measuring how much heat is produced by electromagnetic radiation, particularly sunlight.

Example: Actinometry is essential in studying the effects of sunlight on plant growth.

Definition: Describing a shape that can be divided into equal parts from the center, like certain flowers or starfish, where each part looks the same.

Example: The actinomorphic flowers of the tulip are beautiful and symmetrical.

Definition: A type of bacteria that are often found in the mouth and can sometimes cause infections. They are long and thin, and some can live without oxygen.

Example: Actinomyces are often found in the oral cavity and can lead to infections if they enter the bloodstream.

Definition: A type of microorganism that looks like a mix of bacteria and fungi, often found in soil and can sometimes cause disease.

Example: Actinomycetes play a crucial role in soil health and nutrient cycling.

Definition: A type of antibiotic that is usually red and comes from soil bacteria, used to stop the production of DNA or RNA in cells.

Example: Actinomycin is used in cancer treatment to inhibit the growth of cancer cells.

Definition: A disease that causes inflammation and lumps in the mouth, neck, chest, and abdomen, affecting cattle, pigs, and sometimes humans, caused by certain microorganisms.

Example: The veterinarian diagnosed the cow with actinomycosis after observing the lumpy jaw.