femtochemistry: the branch of chemistry that studies elementary (often very fast) chemical reactions as they occur; the experimental methods are often based on the use of femtosecond laser pulses
chemistry: the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
gynogenesis: female parthenogenesis in which the embryo contains only maternal chromosomes due to the failure of the sperm to fuse with the egg nucleus