Fir fir Christmas tree clip art about Tree Christmas tree doodle

>This article is about the biological organisms known as trees. For other meanings of the word see tree (disambiguation). A tree can be defined as a large, perennial, woody plant. Though there is no set definition regarding minimum size, the term generally applies to plants at least 6 m (20 ft) high at maturity and, more importantly, having secondary branches supported on a single main stem or trunk (see shrub for comparison). Compared with most other plant forms, trees are long-lived. A few species of trees grow to 100 m tall, and some can live for several thousand years. See more at Wikipedia.org...

ay stand for:finite impulse response (a property of some digital filters)far infrared, i.e. infrared radiation of long wave lengthIn India, First Information Report, the first report of crime filed by policeFlight Information Region, a type of airspace F.I.R., the Mandarin rock music groupin web design, Fahrner Image Replacement, a method for replacing text with an image using style sheets [1] See more at Wikipedia.org...