Definition: The quality or state of being able to group things together in a way that the order of operations does not change the result.

Example: In mathematics, the property of associativity allows us to add or multiply numbers in any order without changing the outcome.

Definition: Describing a type of pairing or grouping that is based on similar or different traits, often used in the context of mating or selection.

Example: In assortative mating, individuals tend to choose partners with similar characteristics.

Definition: In a manner that involves grouping or selecting based on similar characteristics or qualities.

Example: The species in the study were assortatively paired based on their size.

Definition: Describing something that lacks a specific direction or is unstable, often used in physics to refer to systems that do not have a consistent orientation.

Example: The astatic system was designed to minimize directional bias in the measurements.

Definition: A highly unstable and radioactive element that is part of the halogen group, similar to iodine, and has a very short half-life.

Example: Astatine is one of the rarest elements on Earth and is used in some types of cancer treatment.

Definition: A type of sapphire that has a star-like shine when cut in a certain way, making it look special and beautiful.

Example: The jeweler showcased a stunning asteria in the display case, captivating all the customers.

Definition: Describing a mineral or gemstone that shows a star-like pattern when viewed from certain angles, often due to the presence of inclusions or structural features.

Example: The asteriated sapphire sparkled beautifully under the light, revealing its star-like effect.

Definition: A small group of stars or a star-shaped figure seen in some crystals due to light reflection or transmission.

Example: The star sapphire displayed a beautiful asterism when viewed under the right lighting conditions.

Definition: Describing something that does not have a breastbone or is not attached to the breastbone.

Example: The asternal ribs are not connected to the sternum, allowing for more flexibility in movement.

Definition: Relating to or resembling a star, often used to describe shapes or forms that have a star-like appearance.

Example: The decoration on the cake was adorned with asteroid patterns that looked like stars.

Definition: A small rocky body in space that orbits the sun, mainly found between the orbits of Mars and Jupiter.

Example: Scientists discovered a new asteroid that could potentially come close to Earth.