Definition: Relating to a classification system that groups organisms based on observable similarities instead of their evolutionary history.

Example: The phenetic classification of species focuses on their physical traits rather than their genetic connections.

Definition: A system of classifying organisms based on their observable characteristics and similarities, rather than their evolutionary relationships.

Example: Phenetics is used to group species based on physical traits rather than genetic information.

Definition: A chemical compound that is the ethyl ether of phenol, appearing as a clear, aromatic liquid.

Example: The chemist used phenetol in the synthesis of various organic compounds.

Definition: A type of drug that stimulates the central nervous system and is used to increase alertness and energy.

Example: The doctor prescribed phenmetrazine to help the patient manage their weight.

Definition: A type of medication that is used to help people sleep, reduce anxiety, and control seizures.

Example: The doctor prescribed phenobarbital to help manage the patient's epilepsy.

Definition: A medication used to treat seizures and as a sedative, belonging to a class of drugs known as barbiturates.

Example: The doctor prescribed phenobarbitone to help control the patient's seizures.

Definition: A change in an organism's traits caused by environmental factors, which looks similar to traits that are usually inherited genetically.

Example: The plant showed a phenocopy of the drought-resistant variety due to the extreme weather conditions.

Definition: A large crystal that is found within a type of igneous rock called porphyry.

Example: The geologist pointed out the phenocrysts in the rock sample, noting their size and clarity.

Definition: A toxic, white solid substance that comes from benzene and is used in making plastics, resins, and medicines, as well as a disinfectant in small amounts.

Example: Phenol is often used in laboratories for its antiseptic properties.

Definition: A type of salt that is derived from phenol, often referred to as phenoxide.

Example: The chemist prepared a solution containing phenolate for the experiment.