leaf

v. flip pages, turn pages (in a book, magazine, etc.); produce leaves (of a plant or tree)

n. flat and usually green structure attached to the stem or branch of a plant; foliage; petal; state of having leaves; page; layer; thin sheet of metal (especially gold or silver); hinged or movable part; extra section added to extend a table's length

In botany, a leaf is an above-ground plant organ specialized for photosynthesis. For this purpose, a leaf is typically flat (laminar) and thin, to expose the cells containing chloroplast (chlorenchyma tissue, a type of parenchyma) to light over a broad area, and to allow light to penetrate fully into the tissues. Leaves are also the sites in most plants where respiration, transpiration, and guttation take place. Leaves can store food and water, and are modified in some plants for other purposes. The comparable structures of ferns are correctly referred to as fronds. Furthermore, leaves are prominent in the human diet as leaf vegetables.
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Leaf is an above-ground plant organ specialized for photosynthesis.Leaf may also refer to: In BooksIn a book it is a single sheet, the left-hand page of which is the verso, and right-hand page is the rectoIn reading a book, it means "to turn the pages," as in "to leaf through a book."
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Noun
1. the main organ of photosynthesis and transpiration in higher plants
(synonym) leafage, foliage
(hypernym) plant organ
(hyponym) cataphyll
(substance-meronym) parenchyma
(part-meronym) venation
2. a sheet of any written or printed material (especially in a manuscript or book)
(synonym) folio
(hypernym) sheet, piece of paper, sheet of paper
(hyponym) flyleaf
(part-holonym) written communication, written language
3. hinged or detachable flat section (as of a table or door)
(hypernym) section, segment
(hyponym) drop-leaf
(part-holonym) dinner table
Verb
1. look through a book or other written material; "He thumbed through the report"; "She leafed through the volume"
(synonym) flick, flip, thumb, riffle, riff
(hypernym) peruse
(derivation) folio
2. turn over pages; "leaf through a book"; "leaf a manuscript"
(hypernym) turn, turn over
(derivation) folio
3. produce leaves, of plants
(hypernym) grow, develop, produce, get, acquire
(derivation) leafage, foliage

(v. i.)
To shoot out leaves; to produce leaves; to leave; as, the trees leaf in May.
  

(n.)
Something which is like a leaf in being wide and thin and having a flat surface, or in being attached to a larger body by one edge or end; as : (a) A part of a book or folded sheet containing two pages upon its opposite sides. (b) A side, division, or part, that slides or is hinged, as of window shutters, folding doors, etc. (c) The movable side of a table. (d) A very thin plate; as, gold leaf. (e) A portion of fat lying in a separate fold or layer. (f) One of the teeth of a pinion, especially when small.
  

(n.)
A special organ of vegetation in the form of a lateral outgrowth from the stem, whether appearing as a part of the foliage, or as a cotyledon, a scale, a bract, a spine, or a tendril.
  

(n.)
A colored, usually green, expansion growing from the side of a stem or rootstock, in which the sap for the use of the plant is elaborated under the influence of light; one of the parts of a plant which collectively constitute its foliage.
  

<language> 1. LISP Extended Algebraic Facility.
2. "LEAF: A Language which Integrates Logic, Equations and Functions", R. Barbuti et al in Logic Programming, Functions Relations and Equations, D. DeGroot et al eds, P-H 1986, pp.201-238.

<mathematics, data> (Or "terminal node") In a tree, a node which has no daughter.
(1998-11-14)