Definition: Having a shape similar to a wheel, often used to describe certain biological structures.

Example: The trochal structure of the rotifer helps it to move through water efficiently.

Definition: A bony projection on the upper part of the thigh bone in many animals, which serves as an attachment point for muscles.

Example: The surgeon pointed out the trochanter during the hip surgery.

Definition: A trocar is a medical instrument with a sharp point used to puncture body cavities, often for the purpose of draining fluids or inserting other instruments.

Example: The surgeon used a trocar to insert a catheter into the patient's abdomen.

Definition: A group of small birds known for their ability to hover in mid-air and their vibrant colors, commonly referred to as hummingbirds.

Example: The trochili are known for their incredible flying skills and beautiful plumage.

Definition: A part of the body that looks like a pulley, found in the arm where the upper arm bone connects to the forearm bone.

Example: The trochlea of the humerus allows for smooth movement of the elbow joint.

Definition: Relating to a structure that resembles a pulley or is associated with the trochlear nerve.

Example: The trochlear muscle helps control eye movement.

Definition: Describing something that can rotate around a central point or axis.

Example: The trochoid mechanism allows for smooth rotation in the machine.

Definition: A specific type of curve created by a point on a circle as it rolls along a straight line.

Example: The path of the toy car followed a trochoid as it rolled down the ramp.

Definition: Relating to a specific type of curve known as a trochoid, which is formed by the path traced by a point on a circle as it rolls along a straight line.

Example: The engineer designed a trochoidal gear system to improve efficiency.

Definition: A tiny, free-swimming larva that has tiny hair-like structures and is found in some aquatic animals, such as certain types of worms and shellfish.

Example: The trochophore is an important stage in the life cycle of many marine invertebrates.

Definition: A type of mineral that is a form of pyrrhotite, commonly found in meteorites and lunar soil, and does not contain much ferrous iron.

Example: Troilite is often studied by scientists to understand the composition of meteorites.