Dictionary > Rocket

Rocket

rocket
1. An artificial firework consisting of a cylindrical case of paper or metal filled with a composition of combustible ingredients, as niter, charcoal, and sulphur, and fastened to a guiding stick. The rocket is projected through the air by the force arising from the expansion of the gases liberated by combustion of the composition. Rockets are used as projectiles for various purposes, for signals, and also for pyrotechnic display.
2. A blunt lance head used in the joust. Congreve rocket, a powerful form of rocket for use in war, invented by Sir William Congreve. It may be used either in the field or for bombardment; in the former case, it is armed with shells or case shot; in the latter, with a combustible material inclosed in a metallic case, which is inextinguishable when kindled, and scatters its fire on every side.
Origin: It. Rocchetta, fr. Rocca a distaff, of German origin. Named from the resemblance in shape to a distaff. See Rock a distaff.
(Science: botany) A cruciferous plant (eruca sativa) sometimes eaten in Europe as a salad.
(Science: botany) A common cruciferous weed with yellow flowers (Barbarea vulgaris).
Origin: F. Roquette (cf. Sp. Ruqueta, It ruchetta), fr. L. Eruca.


You will also like...

Lentic community
Freshwater Communities & Lentic Waters

Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..

Genetic Mutations
Chromosome Mutations – II

This tutorial is a continuation of the first lesson on chromosomal mutation. Here, find out the chromosomal aberrations ..

Genetic engineering
Genetic Engineering Advantages & Disadvantages

This tutorial presents the benefits and the possible adverse eventualities of genetic engineering. Know more about this ..

An artist's depiction of the origin of amphibians
Amphibians & Early Reptiles

Obtaining air outside an aquatic environment required species to acquire suitable adaptations, and this was the case of ..

Lights' Effect on Growth
Lights’ Effect on Growth

This tutorial elaborates on the effect of light on plant growth. It describes how different plants require different amo..

Balanced Diet
A Balanced Diet – Minerals and Proteins

Proteins and minerals can be derived from various dietary sources. They are essential for the proper growth and developm..