A type of meristem that contributes to the growth of a plant’s width, such as the vascular cambium and cork cambium.

Hybrids that result from crossing two organisms of different species or breeds, often in successive generations.

Referring to the area of the body that is both lateral (to the side) and dorsal (towards the back).

The denser, darker wood formed towards the end of the growing season in trees, also called summerwood.

Having broad, wide leaves, often used to describe certain plant species.

A condition caused by the bite of a black widow spider, often resulting in severe pain and muscle cramps.

A genus of spiders, including the black widow, known for their venomous bites.

A northern supercontinent that existed during the Mesozoic era, consisting of North America, Europe, and Asia.

The secretion of milk by the mammary glands following childbirth.

A lymphatic capillary in the small intestine that absorbs dietary fats.