SUB

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sub

[səb]
(petroleum engineering)
A short, threaded section of pipe used to adapt portions of the drilling string that otherwise cannot be screwed together because of variations in thread or design.

SUB

On drawings, abbr. for “substitute.”

SUB

References in periodicals archive ?
Subs can also apply a year of service in the district toward a teaching credential through the state s alternative certification program And in Aldine (Texas) Independent School District, the pay scale goes up if the sub has a degree or is certified, with certified subs earning up to $125 per day for long-term assignments.
Promoting a new training program may well result in more potential subs who come-a-knocking.
It doesn't take long for a kid to learn one form or another of the game Sink the Sub. Nancy Haas of Arizona State University remembers well the day her grandson TJ, then in first grade, got all bright-eyed and announced "We're going to have a SUB tomorrow." When she asked him what that meant, he replied, "You get to do whatever you want and you don't have to listen."
And as Sandra Nelson, a sub for the past seven years in Aldine.
"It's good for the protection of the district, it's good for the protection of the sub, and more importantly it's good for the protection of the students," says Larry More, a retired principal who now teaches a three-day course for substitutes in Iris district, Hillsborough County (Fla.) Public Schools.
It's data like this that have administrators in these districts concerned: With teachers out of the classroom (for any reason) at least 8 percent of the time per year, that adds up to an entire year of a student's K-12 education spent with a sub. "There isn't a school in America where teachers never leave, so substitutes affect every classroom in America," says Geoffrey G.