Check your grammar now! : any of various arboreal chiefly nocturnal primates (superfamily Lemuroidea) that were formerly widespread but are now largely confined to Madagascar and that usually have a longish muzzle, large eyes, very soft woolly fur, and a long furry tail.
An Expository Essay is a piece of written work that aims to define and investigate a topic for the reader. This can be accomplished in several ways: defining a term, comparing and contrasting, analyzing a cause and effect, etc. The main objective is to prove a thesis through factual evidence.
Introductory Paragraph. See, first, Writing Introductory Paragraphs for different ways of getting your reader involved in your essay. The introductory paragraph should also include the thesis statement, a kind of mini-outline for the paper: it tells the reader what the essay is about. The last sentence of this paragraph must also contain a transitional hook which moves the reader to the first paragraph of the body of the paper.