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corn earworm

(Encyclopedia)corn earworm or cotton bollworm, destructive larva of a moth, Heliothis zea. Also known as tomato fruitworm, the larva attacks a variety of crops, boring into and feeding on the developing fruits—to...

ferric sulfate

(Encyclopedia)ferric sulfate or iron (III) sulfate, chemical compound, Fe2(SO4)3, a yellow rhombic crystalline hygroscopic water-soluble salt that decomposes when heated to a temperature of 480℃. The enneahydrate...

iodoform

(Encyclopedia)iodoform īōˈdəfôrmˌ [key], CHI3, yellow crystalline solid that has a penetrating odor. It melts at 119℃ and is insoluble in water but soluble in ether or ethanol. Iodoform was formerly used as...

Yinchuan

(Encyclopedia)Yinchuan or Yinchwan both: yĭnˈchwänˈ [key], city (1994 est. pop. 412,900), capital of Ningxia Hui Autonomous Region, China, on the Huang He (Yellow River). It is a shipping point for the products...

blackbird

(Encyclopedia)blackbird, common name in North America of a perching bird allied to the bobolink, the meadow lark, the oriole, and the grackle and belonging to the family Icteridae. The European blackbird, Turdus me...

picric acid

(Encyclopedia)picric acid trīˌnīˌtrōfēˈnōl [key], C6H2(NO2)3OH, a toxic yellow crystalline solid that melts at 122℃ and is soluble in most organic solvents. Picric acid is a derivative of phenol. It react...

Hebei

(Encyclopedia)Hebei or Hopei both: ho͝o-bā [key], province, 78,900 sq mi (204,404 sq km), NE China, on the Bohai, an ...

anglesite

(Encyclopedia)anglesite ăngˈgləsīt [key], pale green, blue, yellow-to-white, or colorless mineral, a sulfate of lead, PbSO4, that is formed by oxidation of galena, crystallizing in the orthorhombic system and o...

Agramonte, Arístides

(Encyclopedia)Agramonte, Arístides ärēˈstēdās ägrämōnˈtā [key], 1869–1931, Cuban physician and pathologist, M.D. Columbia, 1892. A member of the medical corps of the U.S. army, he was appointed patholo...

pyrrhotite

(Encyclopedia)pyrrhotite pĭrˈətīt [key] or magnetic pyrites, bronze-yellow to bronze-red mineral, a sulfide of iron sometimes containing nickel. It tarnishes easily and is somewhat magnetic. It crystallizes in ...