The phrase "are customarily called" is correct and usable in written English.
It can be used when referring to names or terms that are commonly used or accepted in a particular context or field.
Example: "In the field of biology, organisms that produce their own food through photosynthesis are customarily called autotrophs."
Alternatives: "are typically referred to as" or "are generally known as".
The unseeded Thiago Alves of Brazil, who lost in the final qualifying round, takes Kiefer's slot, gaining entry into the main draw, making him what is customarily called a lucky loser.
But at times, it's hard to know what elements of the story are more important — Horace's regret over never fighting in a war, or the fact that a minor figure named Phil Buzkol "actually had three nicknames, but he was customarily called 'McGarrett' "? (Fortunately for the reader and the story, it's the regret).
A compartmental model based on these assumptions is customarily called a SIR or SIRS model.
In particular in Hunan Province of southern China, cultivated P. odoratum is customarily called "Xiang Yuzu" by local people, and the dried rhizome is often used as a common Chinese traditional medicinal herb for removing dryness, promoting secretion, and quenching thirst [ 4].
In order to depict such relationships in print, two-dimensional diagrams are customarily employed, called phylogenetic trees.
Azān (Arabic: adhān) refers to the words of the Muslim call to prayer which are customarily spoken into the newborn baby's ear by a senior male relative, or an imam (Muslim priest) as a marker of Muslim identity.
Several astronomers objected to calling them planets or planetlike bodies, because planets are customarily defined as large objects orbiting a star -- not drifters with no direct stellar ties.
The main groups are customarily classified as the Transvaal, or northern, Sotho (Pedi, Lovedu, and others); the western Sotho, or Tswana; and the southern Sotho (often called Basuto) of Lesotho and adjoining areas.
In public the sexes are customarily separated.
Cameras are customarily installed at entrances, too.
