Definitions

a comment or instruction (usually added)

The posterior pair of fins under the body of fishes, corresponding to the hind legs of terrestrial quadrupeds.

A genus of root and butt rot fungi in the family Tricholomataceae that produce rhizomorphs and are facultatively parasitic. Many species are pathogenic to trees causing Armillaria root disease.

A plant genus of the family FABACEAE that contains galegine (GUANIDINES). Most of the other species have been reclassified to TEPHROSIA; a few to ASTRAGALUS PLANT; and INDIGOFERA.

A violin lesson is a structured session in which an individual is taught how to play the violin. This includes learning to read music, understanding the different parts of the violin, developing techniques to produce sounds from the instrument, and practicing different pieces of music. These lessons can be given by a trained professional or experienced violinist, and they can occur in a one-on-one setting, in a group, or even through online platforms.

Arthur Compton was an American physicist who won the Nobel Prize in Physics in 1927 for his discovery of the Compton Effect. His work significantly contributed to the development of quantum mechanics and confirmed the dual nature of electromagnetic radiation as both particles and waves. The Compton Effect demonstrated the particle nature of light and resulted in a shift in wavelength after photons collided with electrons. He also contributed to the field of cosmic radiation which later led to the development of nuclear physics. During World War II, he was a key figure in the Manhattan Project that developed the atomic bomb.

Modernisation refers to the process of social, economic, and cultural transition from a traditional or pre-modern society to a modern one. It involves changes in various areas such as technology, lifestyle, social norms, governance, and economy. It typically includes elements like industrialization, urbanization, proliferation of education, increased use of science and technology, and development of complex social and political institutions.

Cling film, also known as plastic wrap, is a thin plastic film typically used for sealing food items in containers to keep them fresh. It clings to smooth surfaces, hence the name, and is used in both home and industrial settings.

Silkweed is a common name that generally refers to various species of plants in the genus Asclepias, commonly known as milkweeds. These plants produce a milky white sap and are known for their silky seed pods. Various species of silkweed are native to North America and Mexico, are known for their bright flowers, and are particularly noted for being the primary food source for Monarch butterflies.

Treacherously; perfidiously.

Forssman antibody is a type of antibody that reacts with Forssman antigen, a heterophile lipid antigen present in most animal species, but not found in humans and some other animals. Its involved in some cases of infectious mononucleosis and can potentially cause false positives in diagnostic tests for various diseases.

Top out refers to reaching the highest point, level, or limit of something, often with the implication that progress or growth will not continue beyond this point. This term is used in various contexts such as rock climbing, construction, finance, etc. For instance, when a mountain climber tops out, they have reached the summit. In finance, when a stock tops out, it has reached its highest price point.