Envelope: meaning, definitions and examples

This word is commonly used for the paper covering used to send letters or documents through the mail.

• I need a stamp to send this letter in an envelope.
• Please put the invitation in an envelope before mailing it.

The word is used for the material that covers and protects an item, typically for packaging. It might be plastic, paper, or foil, especially around food items or gifts.

• Don't forget to remove the wrapper before microwaving the food.
• The chocolate wrappers are all around the room after the party.

Use 'cover' when referring to something that protects, conceals, or shelters an object. It is more general and can be used for different types of protection.

• Always use a cover to keep your food from spilling.
• The book cover is very colorful.

This term is often used for a small package or bundle, generally containing multiple items or information. It is frequently used in contexts related to food, information kits, or small multipart items.

• She handed me a packet of seeds to plant in the garden.
• The orientation packet contains all the details you need.

Used to describe a paper covering for a letter or document. It can also metaphorically describe a context or limit that encloses something.

• Please put the letter in an envelope before sending it.
• Pushing the envelope in terms of creativity is essential.

Used in mathematics to describe a line that touches a curve at a single point without crossing it. Colloquially, it means a sudden change of topic in conversation.

• In geometry, a tangent line only touches the circle at one point.
• He went off on a tangent about hiking after we started discussing books.

Describes a place where two or more roads or lines cross each other. It can also be used figuratively to indicate a point where different things meet or converge.

• There is a traffic light at the intersection of Main Street and First Avenue.
• The intersection of art and technology creates fascinating innovations.

Refers to a physical or metaphorical line or limit that marks the edge or border of an area or concept. Can be used in various fields such as geography, personal space, or disciplines.

• The river forms the boundary between the two countries.
• It's important to set boundaries in relationships.