rule of thumb
71thumb — I UK [θʌm] / US noun [countable] Word forms thumb : singular thumb plural thumbs ** a) the part at the side of your hand that is like a wide finger She lifted the note carefully between finger and thumb. b) the part of a glove that covers your… …
72thumb-and-finger rule — | ̷ ̷ ̷ ̷| ̷ ̷ ̷ ̷ noun : either of two statements in electromagnetism: when the fingers of the right hand are bent so that the thumb points in the direction of the decrease in flux in a magnetic circuit, the fingers will point in the direction… …
73rule out — verb 1. make impossible, especially beforehand (Freq. 6) • Syn: ↑preclude, ↑close out • Derivationally related forms: ↑preclusive (for: ↑preclude) …
74ruleof thumb — rule of thumb n. pl. rules of thumb A useful principle having wide application but not intended to be strictly accurate or reliable in every situation. * * * …
75thumb your nose at — to show no respect for a rule, law, or person in authority Hundreds of tourists have thumbed their noses at the travel restrictions …
76Naismith's Rule — is a rule of thumb that helps in the planning of a walking or hiking expedition by calculating how long it will take to walk the route, including ascents. The rule was devised by William W. Naismith, a Scottish mountaineer, in 1892. The basic… …
77Octet rule — The bonding in carbon dioxide (CO2): all atoms are surrounded by 8 electrons, fulfilling the octet rule. The octet rule is a chemical rule of thumb that states that atoms of low (<20) atomic number tend to combine in such a way that they each… …
7818-Electron rule — The 18 electron rule is a rule of thumb used primarily in transition metal chemistry for characterizing and predicting the stability of metal complexes. Valence shells of a transition metal can accommodate 18 electrons: 2 in each of the five d… …
79Taylor rule — The Taylor rule is a modern monetary policy rule proposed by economist John B. Taylor that stipulates how much the central bank should change the nominal interest rate in response to divergences of actual GDP from potential GDP and divergences of …
80Rifleman's rule — is a rule of thumb that allows a rifleman to accurately fire a rifle that has been calibrated for horizontal targets at uphill or downhill targets. The rule provides an equivalent horizontal range setting for engaging a target at a known uphill… …
