vigésimos

Vigésimos is the plural form of vigésimo in Portuguese, used to refer to the twentieth part of a whole or to the twentieth item in a sequence. The term stems from Latin viginti (twenty) and is linked to the ordinal vigésimo, which denotes position twenty in a series.

In mathematics and everyday use, a vigésimo part represents 1/20 of a quantity. It is equivalent to the decimal 0.05 and to 5 percent. For example, uma vigésima parte de um litro is 50 milliliters. The plural form vigésimos can be used when counting multiple twentieth parts or when referring to multiple items in the twentieth position, such as "os vigésimos elementos do conjunto."

The expression also appears in measurements of time and other continuous quantities. A vigésimo de segundo, for instance, denotes a time interval of 0.05 seconds. In dates or sequences, vigésimos can indicate the twentieth position within a numbered list or calendar, though the ordinal vigésimo is more common for straightforward designation of order.

Vigésimos are used across mathematical, scientific, and everyday Portuguese to convey fractional parts and ordinal positions. They can be contrasted with other fractional terms such as décimos (tenths) and centésimos (hundredths), forming part of the language’s system for expressing portions and ranks.