Final answer:
The terms by-products, carcass, palpated, malleable, extrusions, rivulets, unsavory, imperious, rancid, arcane, semiotics, and kitschy have been defined based on their context within a selection, likely pertaining to a specific subject matter such as literature, history, or science.
Step-by-step explanation:
Each of the words provided is used in specific contexts and can have a variety of meanings. Here are the definitions as might be relevant to the selection you are studying:
By-products: Substances that are produced as a result of making something else in a process or reaction.
Carcass: The body of a dead animal.
Palpated: Examined by touching, usually for medical purposes.
Malleable: Capable of being shaped or bent, usually describing metals or materials.
Extrusions: Objects or shapes formed by pushing material through a die or opening.
Rivulets: Small streams or flows of a liquid.
Unsavory: Disagreeable or distasteful, often describing food or behavior.
Imperious: Assuming power or authority without justification; arrogant and domineering.
Rancid: Having a foul or unpleasant taste or smell, usually due to decomposition or chemical change, often referring to fats or oils.
Arcane: Known or understood by only a few; mysterious or secret.
Semiotics: The study of signs and symbols and their use or interpretation.
Kitschy: Considered to be in poor taste because of excessive garishness or sentimentality, but sometimes appreciated in an ironic or knowing way.