Pronunciation: [sˈɪksti͡əθs] (IPA) 
The spelling of the word "sixtieths" can be confusing due to its pronunciation. The IPA phonetic transcription of this word is /ˈsɪkstiθs/. Notice the silent "x" in the spelling - it is pronounced as "ks" sound. The ending "-tieths" is also pronounced as "-tiths." Therefore, "sixtieths" refers to one of sixty equal parts, and its spelling and pronunciation can trip up even the most experienced writers and speakers.
Sixtieths is a noun that refers to the plural form of "sixtieth," which is an ordinal number that indicates the rank or position of the number 60 in a series. It is derived from the cardinal number "sixty" by adding the suffix "-th" to imply sequential order.
In mathematics, sixtieths denote the division of a whole into 60 equal parts. These parts are often presented as fractional units, with each part representing one sixtieth of the whole quantity being measured or divided. Sixtieths are commonly employed in calculations involving measurements of time and angles, as well as in various mathematical equations and fractions.
In the realm of timekeeping, a sixtieth is equivalent to one minute, as there are 60 minutes in an hour. Similarly, in trigonometry, angles are typically measured using degrees, minutes, and seconds, with each degree divided into 60 minutes and each minute divided into 60 seconds. Therefore, a sixtieth represents one minute of angular measurement.
Moreover, the term "sixtieths" can also be employed in non-mathematical contexts, simply to discuss the ordinal concept of being in the 60th place or position in a series. For instance, one may refer to the sixtieth anniversary, which marks sixty years of an event or occurrence. Overall, sixtieths fundamentally serve as a numerical indicator of sequential order, subdividing a whole into 60 equal portions, whether in mathematics, timekeeping, or broader chronological contexts.
The word "sixtieths" is derived from the term "sixty", which itself comes from the Old English word "sixtig". In Old English, "sixtig" was formed by combining "six" and "-tig" (meaning "group of ten"). The "-tig" suffix is related to the modern English "-ty", used to form the names of tens, such as "twenty", "thirty", etc. Therefore, "sixtieths" refers to the numerical position or quantity related to the number sixty.
