Indispensable+element
11Oligo-élément — Les oligo éléments sont une classe de nutriments, éléments minéraux purs nécessaires à la vie d un organisme, mais en quantités très faibles. On appelle oligo éléments les éléments chimiques qui représentent une masse inférieure à 1 mg/kg. Les… …
12boron group element — ▪ chemical elements Introduction any of the five chemical elements constituting Group 13 (IIIa) of the periodic (periodic law) table (see Figure >). The elements are boron (B), aluminum (Al), gallium (Ga), indium (In), an …
13essential — I (New American Roget s College Thesaurus) adj. substantial, material, constitutional, fundamental, elementary, absolute; necessary, needful, requisite, cardinal, indispensable, vital; inherent, intrinsic, basic. See necessity, part, importance.… …
14Laborem Exercens — was an encyclical written by Pope John Paul II in 1981, on human work. It is part of a larger body of writings known as Catholic social teaching, that trace their origin to Rerum Novarum which was issued by Pope Leo XIII in 1891.External links*… …
15logistics — /loh jis tiks, leuh /, n. (used with a sing. or pl. v.) 1. the branch of military science and operations dealing with the procurement, supply, and maintenance of equipment, with the movement, evacuation, and hospitalization of personnel, with the …
16potassium — /peuh tas ee euhm/, n. Chem. a silvery white metallic element that oxidizes rapidly in the air and whose compounds are used as fertilizer and in special hard glasses. Symbol: K; at. wt.: 39.102; at. no.: 19; sp. gr.: 0.86 at 20°C. [1800 10; < NL; …
17needful — needful, necessary, requisite, indispensable, essential are comparable when meaning urgently required. Needful carries the weakest suggestion of urgency, but it applies to something that is required to supply a want or to fulfill a need {forts,… …
18Jesus Christ — 1. Jesus (def. 1). 2. Jesus (def. 5). * * * Introduction also called Jesus of Galilee or Jesus of Nazareth born c. 6–4 BC, Bethlehem died c. AD 30, Jerusalem founder of Christianity, one of the world s largest religions, and the incarnation …
19papermaking — [pā′pər māk΄iŋ] n. the making of paper papermaker n. * * * pa·per·mak·ing (pāʹpər mā kĭng) n. The process or craft of making paper. paʹper·mak er n. * * * Introduction formation of a matted or felted sheet, usually of cellulose fibres,… …
20essential — adj. & n. adj. 1 absolutely necessary; indispensable. 2 fundamental, basic. 3 of or constituting the essence of a person or thing. 4 (of a disease) with no known external stimulus or cause; idiopathic. n. (esp. in pl.) a basic or indispensable… …
