Exam: TOEFL

Definition: A layer of connective tissue that surrounds a group of nerve fibers, providing support and protection.

Example: The perineurium plays a crucial role in maintaining the health of nerve fibers.

Definition: Relating to a specific time in history or a particular age.

Example: The museum has a collection of period furniture from the 18th century.

Definition: A word that can refer to a specific length of time, a punctuation mark that shows the end of a sentence, or a complete thought in writing.

Example: The teacher explained that a period is used to end a sentence.

Definition: Describing something that happens or appears at regular intervals or in repeated cycles.

Example: The periodic table organizes elements based on their atomic number and properties.

Definition: Relating to something that is published regularly, such as a magazine or journal, often at fixed intervals.

Example: The library subscribes to several periodical publications for research purposes.

Definition: A type of publication that is released regularly, such as a magazine or journal, often containing articles, stories, or research.

Example: She subscribes to several periodicals to stay updated on current events and trends.

Definition: In a way that happens at regular intervals or from time to time.

Example: The train arrives periodically, so you don't have to wait long.

Definition: The quality of occurring at regular intervals or the state of being repeated over time.

Example: The periodicity of the seasons affects many aspects of nature.

Definition: The process of dividing a subject, especially history, into distinct time periods to help organize and understand it better.

Example: Historians often use periodization to make sense of historical events by grouping them into specific eras.

Definition: Related to the tissues and structures that support and surround the teeth.

Example: The dentist specializes in periodontal treatments to help patients maintain healthy gums.

Definition: In a way that relates to the structures surrounding the teeth, particularly the gums and bone.

Example: The dentist explained the procedure periodontally to ensure the patient understood the importance of gum health.

Definition: A dental expert who focuses on the treatment and prevention of gum diseases and other conditions affecting the supporting structures of the teeth.

Example: After experiencing gum pain, I decided to visit a periodontist for a check-up.