Exam: TOEFL

Definition: A bone in the foot that forms the heel and is part of the tarsus.

Example: The calcaneum is the largest bone in the foot and supports the weight of the body when standing.

Definition: The large bone located at the back of the foot, commonly known as the heel bone.

Example: He injured his calcaneus while playing soccer.

Definition: A type of vitamin that is important for bone health and is often used as a dietary supplement.

Example: Many people take calciferol to ensure they get enough vitamin D for strong bones.

Definition: Relating to the process of forming calcium salts, often seen in biological contexts such as the development of eggshells in certain animals.

Example: The calcific process is essential for the formation of strong eggshells in birds.

Definition: The process or result of becoming hard or stiff due to the accumulation of calcium or calcium salts in a substance or tissue.

Example: The calcification of the arteries can lead to serious health issues.

Definition: Hardened due to the accumulation of calcium salts, often making something rigid or inflexible.

Example: The calcified tissue in the bone makes it stronger and less flexible.

Definition: To become hard or to turn into a stony substance, often through the accumulation of calcium salts.

Example: Over time, the soft tissue calcified, making it difficult to move.

Definition: To make something hard or stiff by adding calcium or by becoming hard like stone.

Example: The doctor explained how certain conditions can calcify the bones over time.

Definition: The process of heating a material to a high temperature to cause a chemical change, usually to remove water or carbon dioxide.

Example: The calcination of limestone produces lime, which is used in various industrial processes.

Definition: Describes a substance that has been transformed through a process of heating to high temperatures, often to remove moisture or volatile substances.

Example: The calcined material was used in the construction of the new building.

Definition: To heat a substance to a high temperature in order to bring about a chemical change, usually to remove volatile substances or to oxidize it.

Example: The minerals were calcined to produce a purer form of the metal.

Definition: A medical condition where calcium builds up in certain tissues or parts of the body, which can lead to hardening or damage.

Example: The doctor diagnosed her with calcinosis after noticing calcium deposits in her skin.