Ninety: meaning, definitions and examples

Etymology

• The word 'ninety' comes from the Old English word 'nigon tymde', meaning 'nine tens'.
• In Latin, the number is called 'nonaginta', which also refers to nine groups of ten.
• The base structure of the number shows the combination of 'nine' and a suffix meaning 'ten times'.

Mathematics

• In Roman numerals, ninety is represented as 'XC', showcasing a combination of ten subtracted from one hundred.
• Ninety is a composite number, which means it can be divided by numbers other than one and itself, having factors like 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, and 90.
• Ninety is also significant as it is the highest two-digit whole number.

Culture

• In some cultures, the number ninety is associated with longevity, often referenced in celebrations or milestones.
• When examined in numerology, ninety is often seen as a number representing completion and fulfillment.
• Ninety is a common benchmark for age, marked by special celebrations and recognitions of a long life.

Science

• Ninety degrees is a significant angle in geometry, representing a right angle that is critical in construction and design.
• The human body temperature is sometimes referenced around ninety-eight degrees Fahrenheit, close to the number we're discussing.
• In chemistry, the 'nineties' often relate to research focusing on rapid advancements in the fields, such as technology and drug developments.

Literature

• In literature, ninety can symbolize a transitional phase, seen in character development and plot progression.
• Authors often play with numbers, using the idea of eighty-nine and ninety as metaphors for growth or significant change in narratives.
• Ninety is sometimes used in poetry to evoke feelings of nostalgia, creating a link between past and present.

With rank #4,930, this word represents useful upper-intermediate vocabulary. Understanding and using it will help you express more complex ideas effectively.

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