Bottlebrush plants (Callistemon spp.) get their name from the spikes of flowers that bloom at the ends of the stems, bearing a strong resemblance to a bottle brush. Grow them as shrubs or small trees that grow up to 15 feet. Most bottlebrush varieties bloom over a long summer season in shades of red or crimson.
(countable and uncountable, plural conditionalities) ( 1 uncountable) A state of being subject to conditions. ( 2 countable, economics, finance) A condition applied to the access of a government to credit facilities and other international financial assistance, especially from the IMF and the World Bank.
Freebase(4.00 / 1 vote)Rate this definition: Permittivity. In electromagnetism, absolute permittivity is the measure of the resistance that is encountered when forming an electric field in a medium. In other words, permittivity is a measure of how an electric field affects, and is affected by, a dielectric medium.