Definition: A flat, perforated structure found in certain marine animals that helps them take in water for their movement and feeding systems.

Example: The madreporite allows the sea star to regulate water flow in its body.

Definition: A type of tree that is known for its reddish bark and is often found in the western United States.

Example: The madrona tree stood tall with its distinctive bark and lush green leaves.

Definition: A type of evergreen tree found mainly on the Pacific coast of North America, known for its smooth red bark, shiny leaves, and edible red berries.

Example: The madrone tree is beautiful, especially when its bark peels away to reveal a bright red color.

Definition: A type of evergreen tree found along the Pacific coast of North America, known for its shiny leaves and orange-red berries that can be eaten. The wood from this tree is often used to make furniture, and its bark is used in tanning leather.

Example: The madrono tree is famous for its beautiful bark and delicious berries.

Definition: A small plant that grows close to the ground, known for its rough stems and small blue flowers, often found in Europe and used as a substitute for another plant called madder.

Example: The madwort bloomed beautifully in the garden, attracting many bees with its blue flowers.

Definition: A very strong and violent whirlpool or a chaotic situation that is difficult to control.

Example: The ship was caught in the maelstrom, struggling against the powerful currents.

Definition: A small, soft-bodied, legless larva that comes from certain types of flies, often found in decaying food or organic matter.

Example: The old food in the trash attracted maggots, which made the kitchen smell bad.

Definition: Molten rock material found beneath the Earth's surface that can solidify to form igneous rock when it cools.

Example: The volcano erupted, releasing magma that flowed down its sides.

Definition: Relating to or formed from magma, which is molten rock beneath the Earth's surface.

Example: The magmatic activity in the region has led to the formation of several volcanoes.

Definition: A mineral that is a type of magnesium carbonate, often found in white, yellowish, or brown colors, and used to make magnesium oxide and other products.

Example: Magnesite is commonly used in the production of refractory materials.