quaternary

• Относящийся к числу четыре; в геологии относится к самому последнему периоду кайнозойской эры, охватывающему последние 2,6 миллиона лет.

Relating to the number four; in geology, it refers to the most recent period of the Cenozoic era, covering the last 2.6 million years.

1. Arranged in sets of fourC2formal

   Consisting of or arranged in groups of four.

   Четверичный

   • The quaternary structure of a protein involves four subunits.
   • The ancient symbol had a quaternary design with four repeating elements.
   • The classification system is quaternary, grouping items into sets of four.

   Synonymsfourfoldquadruplequaternate

2. Fourth in orderC2formal

   Coming next after the third and just before the fifth in position, time, degree, or magnitude.

   Четвертичный

   • The quaternary period is the most recent geological time period.
   • In the quaternary stage of the project, we will finalize the details.
   • The quaternary level of the hierarchy includes the top executives.

   Synonymsfourth

• Существительное, обозначающее кардинальное число, являющееся суммой трёх и одного, или набор из четырёх предметов.

A noun referring to the cardinal number that is the sum of three and one, or a set of four things.

1. The number fourC2formal

   The cardinal number that is the sum of three and one.

   Четыре

   • In some ancient systems, quaternary was considered a perfect number.
   • The quaternary of elements in the problem was solved easily.
   • He counted up to quaternary before stopping.

   Synonymsfourquatern