erf

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erf

(ɜːf)
n, pl erven (ˈɜːvən)
(Civil Engineering) South African a plot of land, usually urban, marked off for building purposes
[Afrikaans]

Erf

(ɜːf)
n acronym for
(Chemistry) electrorheological fluid: a man-made liquid that thickens or solidifies when an electric current passes through it and returns to a liquid when the current ceases
References in periodicals archive ?
When the ERFS II tanks are pressure refueled, make sure you follow the procedures like it says in Paras 2-248-2-249 of TM 1-1520-240-10.