Definition: A type of fossilized structure made of layers formed by microorganisms, especially cyanobacteria, that trap and bind sediment over a long period.

Example: Stromatolites are some of the oldest evidence of life on Earth, dating back billions of years.

Definition: Relating to a type of layered rock formed by the activity of microorganisms, particularly cyanobacteria, which create structures known as stromatolites.

Example: The stromatolitic formations in the ancient ocean provide valuable insights into early life on Earth.

Definition: Relating to or characterized by a struma, which is an abnormal enlargement of the thyroid gland.

Example: The doctor noted that the patient had a strumose condition that required further examination.

Definition: A book that keeps official records of the ancestry and lineage of purebred animals, particularly horses and dogs.

Example: The studbook is essential for tracking the breeding history of racehorses.

Definition: A type of wood used in construction, typically for creating the framework of walls or partitions.

Example: The carpenter used studding to build the new wall in the house.

Definition: A type of small, colorful fish found in the southeastern United States, belonging to the topminnow family.

Example: The studfish swam gracefully in the clear water of the pond.

Definition: To walk in a heavy or clumsy way, often making a loud noise with your feet.

Example: He stumped through the muddy field, leaving deep footprints behind.

Definition: The part of a tree that remains after the trunk has been cut down, or a similar part of something that has been cut off.

Example: The children played around the old tree stump in the park.

Definition: To confuse or puzzle someone, making it difficult for them to respond or find a solution.

Example: The difficult math problem stumped the students during the exam.

Definition: Timber that is still standing and can be sold or cut down for use.

Example: The company purchased the stumpage rights to the forest for future logging.

Definition: Having a short and thick appearance; not tall or slender.

Example: The tree in the yard is stumpier than the one in the park.

Definition: The most short and thick, often used to describe something that is not tall or slender.

Example: The stumpiest tree in the forest was perfect for climbing.