(category defined by the Communist Party) poor and lower-middle peasants: farmers who, before land reform, possessed little or no land (poor peasants) and those who were barely able to support themselves with their own land (lower-middle peasants)
potency / titer (measure of effective concentration in virology or chemical pathology, defined in terms of potency after dilution by titration) / valence (perceived value in psychology) / valency
(idiom) Originally, it referred to extremely rigorous military defenses. It is also used for sharply defined boundaries between people, groups, or fields.
(idiom) To determine form and dimensions according to established rules. Figuratively, it means that everything should follow defined principles or standards.
(idiom) It refers to a broad and highly abstract principle lacking sharpness or practical force. The expression suggests a grand idea with no clearly defined edges.
(idiom) Describes being allowed to act only within narrowly defined limits. It is equivalent to the expression meaning “to draw a circle on the ground as a prison.”
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