phi
BrE /fai/ AmE /fai/
noun en → es
the sixteenth letter of the Greek alphabet, written as Φ or φ in upper and lower case respectively
la letra fi
Collocations phi symbol
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The phi symbol is used in physics to represent the magnetic flux.
El símbolo fi se utiliza en física para representar el flujo magnético.
a mathematical constant, approximately equal to 1.618033988749895, which is the ratio of two quantities such that their sum divided by the larger quantity is also equal to the larger quantity divided by the smaller one; often denoted by the Greek letter φ
el número áureo
Collocations golden ratio
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The golden ratio, often denoted by the Greek letter phi, is found in many natural forms.
La proporción áurea, a menudo representada por la letra griega fi, se encuentra en muchas formas naturales.