The default when you type in a search all of PowerPoint, which includes Microsoft office online. You can limit where your search is done by selecting it from the drop down menu . To the right of the text box is a magnify glass icon and the word search and a download arrow. Clicking on the arrow Will make the drop down menu appear

Syllable added to a root word to change its meaning : affixan independent word--example run,walk,book : free morphemeaffix that gives grammatical meaning such as tense or number : inflectiona word part that must attach to a word in order to be usable : bound morphemedegree of comparison formed by adding -er or more to an adjective : comparativedegree of comparison formed by adding -est or most to an adjective : superlativeaffix added to the beginning of a word : prefixaffix added to the end of a word : suffixroot word of lovable : lovetwo roots used together to form one word : combining form