AskDefine | Define leaflet

Dictionary Definition



1 a thin triangular flap of a heart valve [syn: cusp]
2 part of a compound leaf
3 a small book usually having a paper cover [syn: booklet, brochure, folder, pamphlet]

User Contributed Dictionary




  • , /ˈliːflɪt/, /"li:flIt/


  1. In the context of "botany": One of the components of a compound leaf.
  2. In the context of "botany": A small plant leaf.
    The new leaflets at the end of the branch were a lighter shade of green than the mature leaves.
  3. A small sheet of paper containing information, used for dissemination of said information, often an advertisement.
    A leaflet had been left under the car's windshield wiper.
  4. In the context of "anatomy": A flap of a valve of a heart or blood vessel.


component of a compound leaf
  • Italian: fogliolina
small plant leaf
small piece of paper with information
  • Dutch: folder
  • Finnish: esite, lentolehtinen
  • French: dépliant
  • Italian: dépliant, volantino
  • Polish: ulotka
  • Portuguese: folder
flap of a valve of a heart or blood vessel


  1. To distribute leaflets to.
    A sidewalk preacher gave an impassioned sermon while an assistant leafleted those who stayed to listen.
  2. To distribute leaflets.
    During the summer, Peter earned some extra cash by leafleting for a local pizza delivery restaurant.

Usage notes

  • The inflected forms leafletted and leafletting are sometimes seen, but the correctly formed inflections leafleted and leafleting are preferred.

Derived terms

Extensive Definition

A leaflet in botany is a part of a compound leaf. A leaflet may resemble an entire leaf, but it is not borne on a stem as a leaf is, but rather on a vein of the whole leaf . Compound leaves are common in many plant families.
A tomato plant has leaflets on compound leaves.
Leaflets borne on the central vein of a leaf are referred to as pinnae; the compound leaves themselves are described as pinnate. A plant may be further subdivided in that the pinnae are themselves split into leaflets, or pinnules; these leaves are now twice pinnate, or bipinnate. A few plant species even have tripinnate leaves.
leaflet in Czech: Lístek
leaflet in German: Blättchen
leaflet in Spanish: Foliolo
leaflet in French: Foliole
leaflet in Polish: Listek
leaflet in Portuguese: Folíolo

Synonyms, Antonyms and Related Words

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