Definition: The front part of an insect's body that is located just behind the head and supports the first pair of legs.

Example: The prothorax of the beetle is hard and protects its delicate wings.

Definition: A type of simple organism that is usually made up of a single cell and belongs to a group of living things that are not plants, animals, or fungi.

Example: The pond was full of different kinds of protists, including tiny algae and amoebas.

Definition: The most common form of hydrogen, which has one proton and no neutrons, making it the lightest isotope of hydrogen.

Example: Protium is the simplest and most abundant isotope of hydrogen found in nature.

Definition: The primary tissue in plants that develops into the outer layer, known as the epidermis.

Example: The protoderm is essential for the formation of the plant's protective outer layer.

Definition: Relating to early forms of humans or human-like beings that existed in the past.

Example: Scientists discovered protohuman fossils that provide insight into our evolutionary history.

Definition: A type of early human or human-like primate that is considered to be a precursor to modern humans.

Example: Scientists study protohumans to understand the evolution of our species.

Definition: A small particle found in the center of an atom that has a positive charge and is part of the atom's nucleus.

Example: The proton is essential for the structure of atoms and determines the element's identity.

Definition: To add one or more protons to a molecule, ion, or radical, which changes its chemical properties.

Example: In the reaction, the chemist decided to protonate the compound to enhance its reactivity.

Definition: Relating to or made up of protons, which are positively charged particles found in the nucleus of an atom.

Example: The protonic properties of the element determine its behavior in chemical reactions.

Definition: Relating to the ability to sense basic sensations like pain, pressure, heat, or cold without being able to pinpoint the exact source of the sensation.

Example: The protopathic sensations are important for detecting potential harm to the body.

Definition: A clear, jelly-like substance found inside living cells that contains various components necessary for life, including the nucleus and cytoplasm.

Example: Under the microscope, we could see the protoplasm of the cell moving and changing shape.