Definition: A type of thorny shrub that produces small red or orange berries and has white flowers, commonly used for decoration in gardens.

Example: The garden was beautiful with the bright orange berries of the pyracantha shining in the sunlight.

Definition: Having the shape of a pyramid, which is a solid object with a polygonal base and triangular sides that meet at a point.

Example: The architect designed a pyramidal structure for the new museum.

Definition: Not a valid English word.

Example: Not available.

Definition: Having the shape or form of a pyramid, typically with a square or triangular base and sloping sides that meet at a point.

Example: The architect designed a pyramidical structure that stood out in the city skyline.

Definition: The hard seed or stone found in certain fruits, like cherries, that contains the seed inside.

Example: The cherry's pyrene is hard and protects the seed within.

Definition: A natural chemical substance derived from certain flowers, used to kill insects.

Example: Farmers often use pyrethrin to protect their crops from pests.

Definition: A type of insecticide made from the dried flowers of certain chrysanthemums, used to kill insects.

Example: Farmers often use pyrethrum to protect their crops from pests.

Definition: Having a shape that resembles a pear, typically wider at the bottom and narrower at the top.

Example: The fruit was pyriform, making it easy to identify as a type of pear.

Definition: A common mineral that is made of iron and sulfur, known for its shiny, metallic yellow appearance, often called 'fool's gold' because it looks like gold.

Example: The geologist found a large piece of pyrite while exploring the cave.

Definition: Relating to or containing a type of mineral known as pyrite, which is often called fool's gold due to its metallic luster and pale brass-yellow hue.

Example: The geologist examined the pyritic rocks for signs of gold deposits.

Definition: Relating to or made up of rock fragments that come from volcanic eruptions.

Example: The pyroclastic flow destroyed everything in its path during the volcanic eruption.