Calvin cyclen.

Brit.

/ˈkalvɪn ˌsʌɪkl/, U.S.

/ˈkælv(ə)n ˈˌsaɪk(ə)l/

Origin: From a proper name, combined with an English element. Etymons: proper name Calvin , cycle n.¹

Etymology: < the name of Melvin Calvin (1911–97), U.S. chemist, who together with James Bassham and Andrew Benson discovered the process in 1950 + cycle n.¹Compare earlier Benson-Calvin cycle in the same sense (compare quot. 1953).

Biochemistry.

A cycle of metabolic reactions which occur as a part of photosynthesis in plants and certain bacteria, by means of which carbon dioxide is converted into glucose.The cycle, which can proceed in darkness, begins with the reaction of CO₂ with ribulose 1,5-bisphosphate and ends with the regeneration of this molecule.With quot. 1953 cf. note in etymology.

ΚΠ

1953 J. F. Loneragan Molybdenum in Growth & Metabolism Green Plants 44 Gaffron and Fager..disagree with the Benson-Calvin cycle and suggest that alanine, malic acid and aspartic acid are formed via pyruvic acid.]

1955 H. Lees Biochem. Autotrophic Bacteria 99 The mechanism of carbon dioxide assimilation in green-plant photosynthesis is known to be broadly represented by the Calvin Cycle.

1985 Cambr. Encycl. Life Sci. i. 25/1 Fixation of one molecule of carbon dioxide by the Calvin cycle..requires three molecules of ATP and two of NADPH₂.

2006 New Scientist 25 Feb. 38/1 The electrons and protons are used to create molecules that provide the chemical energy for a second process, the Calvin cycle, which converts carbon dioxide and water into sugars.

This is a new entry (OED Third Edition, March 2020; most recently modified version published online December 2021).

单词	calvin cycle
释义	Calvin cyclen. Brit. /ˈkalvɪn ˌsʌɪkl/, U.S. /ˈkælv(ə)n ˈˌsaɪk(ə)l/ Origin: From a proper name, combined with an English element. Etymons: proper name Calvin , cycle n.¹ Etymology: < the name of Melvin Calvin (1911–97), U.S. chemist, who together with James Bassham and Andrew Benson discovered the process in 1950 + cycle n.¹Compare earlier Benson-Calvin cycle in the same sense (compare quot. 1953). Biochemistry. A cycle of metabolic reactions which occur as a part of photosynthesis in plants and certain bacteria, by means of which carbon dioxide is converted into glucose.The cycle, which can proceed in darkness, begins with the reaction of CO₂ with ribulose 1,5-bisphosphate and ends with the regeneration of this molecule.With quot. 1953 cf. note in etymology. ΚΠ 1953 J. F. Loneragan Molybdenum in Growth & Metabolism Green Plants 44 Gaffron and Fager..disagree with the Benson-Calvin cycle and suggest that alanine, malic acid and aspartic acid are formed via pyruvic acid.] 1955 H. Lees Biochem. Autotrophic Bacteria 99 The mechanism of carbon dioxide assimilation in green-plant photosynthesis is known to be broadly represented by the Calvin Cycle. 1985 Cambr. Encycl. Life Sci. i. 25/1 Fixation of one molecule of carbon dioxide by the Calvin cycle..requires three molecules of ATP and two of NADPH₂. 2006 New Scientist 25 Feb. 38/1 The electrons and protons are used to create molecules that provide the chemical energy for a second process, the Calvin cycle, which converts carbon dioxide and water into sugars. This is a new entry (OED Third Edition, March 2020; most recently modified version published online December 2021). < n.1955
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