Word library

Knowledge, stories, or history passed down by speech from one generation to the next rather than through writing.

A round citrus fruit with a thick orange peel, or the color of that fruit.

A formal speech, especially one given on a ceremonial occasion.

A person who is skilled at giving formal speeches.

The curved path that an object in space follows around a planet, star, or moon.

The amount of time it takes an object to complete one full orbit around another body.

The way things are arranged one after another, or a request for goods or services.

Arranged or done in a neat, organized way, without confusion.

Not special or different in any way, like most other things of its kind.

The vertical, or y-axis, coordinate of a point on a graph.

Rock or mineral from which valuable metal can be extracted.

A part of the body that performs a specific function, or a large musical instrument played with keys.

A group of organs that work together to carry out a particular set of functions in the body.

A specialised structure within a cell that carries out a particular function, roughly equivalent to an organ within the body.

Grown or produced without artificial chemicals, or relating to living things.

The branch of chemistry that studies carbon-containing compounds and how they react.

A chemical compound that contains carbon, usually combined with hydrogen, and often found in or associated with living things.

To plan or arrange something in a careful, orderly way.

Any living thing, from a tiny bacterium to a large animal or plant.

A group of people working together for a particular purpose, or the act of arranging something.

To arrange things or plan an event so that everything has its proper place or order.

Arranged in a neat, efficient, or planned way.

A person who arranges and coordinates an event or activity.

To align or position something in relation to a fixed point, or to familiarize someone with a new situation.

The Japanese art of folding paper into decorative shapes, such as animals or flowers.

The place, time, or source where something began.

Existing from the very beginning, or new and not copied from anything else.

At first, before any changes were made.

Elaborately decorated, especially with complex patterns.

The geological process by which mountains are formed, typically through the collision or movement of tectonic plates.

Describing a voice or style of speaking that is full, rich, and impressive, often pompously so.

Following the traditional or generally accepted beliefs, practices, or methods.

To move or swing repeatedly between two positions, or to alternate between two states or opinions.

A repeated back-and-forth movement or variation around a central point.

The process by which a liquid passes through a thin membrane from an area of lower concentration toward an area of higher concentration, without using energy.

A measure of the total concentration of dissolved particles in a solution, which determines the direction water will move by osmosis.

The pressure needed to stop water from moving across a membrane from a less concentrated solution into a more concentrated one.

To become rigid and fixed in attitude or in habits, or, literally, to turn into bone.

Appearing or stated to be true, though not necessarily so.

According to what appears or is stated to be true, though the reality may be different.

Designed to impress others through an expensive or elaborate display.

The act of excluding someone from a group or society.

A very large flightless bird with long legs, known for being the fastest runner among birds.

Different from the one already mentioned, or additional.

If not, used to show what would happen under different circumstances, or in other respects.

A furry animal with a long tail that swims well and lives near rivers or the sea.

A word said suddenly when you feel pain.

Used to say what is the right or sensible thing to do.