Dictionary definitions   Hi just a quick note on how dictionary definitions can be used  Dictionaries are tertiary sources so rely on other sources for their word creation  ie in Macroecology  Ideally for wikipedia secondary sources are preferred as that is where the meaning of the words come from   The other thing is using a dictionary meaning to provide a point of view ie in Evolution as theory and fact constituted synthesis  original research as the source is being extended whether it makes logical sense or not the result is open to interpretation or point of view  This reason for this can be seen with the word theory as it has slightly different meanings in British English and American English so the actual dictionary source can change the meaning of interpretation  cheers