An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

Solid → rock present beneath any → soil, → sediment, or other surface cover. In some locations it may be exposed at earth's surface.

Bedrock, from bed (O.E. bed, from P.Gmc. *badjam "sleeping place dug in the ground;" PIE *bhedh- "to dig, pierce") + → rock.

Sangbastar, from sang "stone, rock," → stone, + bastar "bed" (Mid.Pers. vistarak, cognate with Mod.Pers. gostar "a bed; spreading; scatterer," Av. star-, starəta- "spread," from star- "to spread," Skt. strnâti).

A rock formed by the process of → brecciation.

→ brecciated; → rock.

A → rock formed by the solidification of molten material that originated within the Earth (as → magma or → lava).

Igneous, from L. igneus "of fire, fiery," from ignis "fire," from PIE *egni- (cf. Skt. agni- "fire, sacrificial fire," O.C.S. ogni, Lith. ugnis "fire"); → rock.

Sang "stone, rock," → stone; âzarin "fiery," from âzar, variants âtaš, taš, from Mid.Pers. âtaxš, âtur "fire;" Av. ātar-, āθr- "fire," singular nominative ātarš-; O.Pers. ātar- "fire;" Av. āθaurvan- "fire priest;" Skt. átharvan- "fire priest;" cf. L. ater "black" ("blackened by fire"); Arm. airem "burns;" Serb. vatra "fire;" PIE base *āter- "fire" + -in adj. suffix.

1) A large mass of → stone forming a hill, cliff, promontory, or the like.
2) Geology: Mineral matter of variable composition, consolidated or unconsolidated, assembled in masses or considerable quantities in nature, as by the action of heat or water (Dictionary.com).

M.E. rokk(e), from O.Fr. ro(c)que, roche (cf. Sp., Provençal roca, It. rocca, M.L. rocca, V.L. *rocca, of uncertain origin.

Bard (Dehxodâ) "rock, stone," used in a large part of Western Iran, specifically in Lori and Kurd., related to Kurd. pal "rock, stone;" cf. Gk. poros "rock." Sang, → stone.

Pure natural crystalline form of → silica, SiO₂, which is transparent and colorless.

→ rock; → crystal.

A projectile driven by reaction propulsion that carries its own propellants. → missile = mušak (موشک).

From It. rocchetto "a rocket," literally "a bobbin," diminutive of rocca "a distaff," with reference to its shape.

The study of celestial bodies in the wavelengths that are almost completely absorbed by the atmosphere, by using a rocket to carry instruments above 250 km to measure the searched for phenomena.

→ rocket; → astronomy.

The science of rocket design, development, and flight.

→ rocket + -ry a noun suffix.

Roket šenâsi, from roket, → rocket, + šenâsi, → -logy; roketgari with suffix -gari, from -gar, → -or.

A rocket launched from a balloon at a pre-determined height and fired by a ground-controlled radio relay when some particular event, e.g. a solar flare, occurs.

From rocket + balloon.

From roket + bâlon, → ballon astronomy.

A rock composed of materials that were transported to their present position by wind or water. → Sandstone, → shale, and → limestone are sedimentary rocks.

→ sedimentary; → rock.