Centi (symbol c) is a unit prefix in the metric system denoting a factor of one hundredth.Proposed in 1793 and adopted in 1795, the prefix comes from the Latin centum, meaning hundred.Since 1960, the prefix is part of the International System of Units (SI).It is mainly used in combination with metre to form centimetre, a common unit of length.roposed in 1793 and adopted in 1795, the prefix comes from the Latin centum, meaning hundred. Since 1960, the prefix is part of the International System of Units (SI). It is mainly used in combination with metre to form centimetre, a common unit of length.
Vigor is defined as strength and health. An example of vigor is the vitality of a strong young man. active physical or mental force or strength; vitality. active or healthy growth: the vigor of a plant. intensity, force, or energy: the vigor of her denial.
Heterosis, hybrid vigor, or outbreeding enhancement, is the improved or increased function of any biological quality in a hybrid offspring.The adjective derived from heterosis is heterotic.An offspring exhibits heterosis if its traits are enhanced as a result of mixing the genetic contributions of its parents.eterosis is often discussed as the opposite of inbreeding depression although differences in these two concepts can be seen in evolutionary considerations such as the role of genetic variation or the effects of genetic drift in small populations on these concepts.