Definition: The bone in the forearm that runs from the elbow to the wrist on the side opposite the thumb.

Example: The doctor explained that the ulna is one of the two main bones in the forearm.

Definition: Relating to the ulna, which is one of the two long bones in the forearm, located on the side opposite the thumb.

Example: The doctor explained that the ulnar nerve runs along the inner side of the elbow.

Definition: A type of soil that is typically found in humid tropical regions, characterized by a clay-rich layer and low lime content, making it moist and often less fertile.

Example: Ultisols are commonly found in the southeastern United States and are known for their reddish color due to iron oxide.

Definition: Relating to something that is extreme or excessive, often going beyond the usual limits.

Example: The ultra marathon is a race that is much longer than a standard marathon.

Definition: A person who holds extreme views or beliefs, often in a political or social context.

Example: The ultra in the debate expressed very strong opinions that shocked many.

Definition: Referring to a type of igneous rock that has a very low silica content and is rich in minerals like iron and magnesium.

Example: The geologist studied the ultrabasic rock samples to understand their mineral composition.

Definition: Extremely bright or emitting a lot of light.

Example: The ultrabright lights illuminated the entire stadium during the concert.

Definition: A machine that spins very fast to separate small particles from liquids or to separate different substances based on their size and weight.

Example: The scientist used an ultracentrifuge to separate the proteins from the solution.

Definition: To subject something to a machine that spins at very high speeds to separate substances based on their density.

Example: The scientist decided to ultracentrifuge the samples to isolate the proteins.

Definition: Very low in temperature, often close to absolute zero, where unusual physical properties can occur.

Example: Scientists are studying ultracold atoms to understand quantum mechanics better.

Definition: Very small in size, taking up minimal space while still being functional or effective.

Example: The ultracompact camera fits easily in my pocket, making it perfect for travel.

Definition: Very harsh or severe in judgment or criticism.

Example: The ultracritical review of the film left the director feeling discouraged.