- Period of light (as contrasted with the period of darkness),
- Period of twenty-four hours
- General term for time
- Point of time
- Sunrise to sunset
- Sunset to next sunset
- A year (in the plural; I Sam 27:7; Ex 13:10, etc.)
- Time period of unspecified length.
- A long, but finite span of time - age - epoch - season.
Biblical Hebrew has a limited vocabulary, with fewer words compared to other languages, like English that has the largest vocabulary. So words often have more than one meaning and context would determine the meaning. Strong's Lexicon yom is Hebrew #3117 יוֹם  The word Yom's root meaning is to be hot as the warm hours of a day.
Thus "yom", in its context, is sometimes translated as: "time" (Gen 4:3, Is. 30:8); "year" (I Kings 1:1, 2 Chronicles 21:19, Amos 4:4); "age" (Gen 18:11, 24:1 and 47:28; Joshua 23:1 and 23:2); "age" (1 Samuel 9:20); "always" (Deuteronomy 5:29, 6:24 and 14:23, and in 2 Chronicles 18:7); "season" (Genesis 40:4, Joshua 24:7, 2 Chronicles 15:3); epoch or 24-hour day (Genesis 1:5,8,13,19,23,31) – see "Creationism", below.
Yom relates to the concept of time. Yom is not just for day, days, but for time in general. How yom is translated depends on the context of its use with other words in the around it, using hermeneutics.
The word day is used somewhat the same way in the English language, examples: "In my grandfather's day, cars did not go very fast" or "In the day of the dinosaurs there were not many mammals."
- Yom Tov, in plural Yamim Tovim, literally the Good Day(s), the Jewish holidays
- Yom tov sheni shel galuyot The second festival day in the Diaspora
- Yom Kippur, Day of Atonement
- Yom Kippur Katan Minor Day of Atonement
- Yom Ha'atzmaut, Israeli Independence Day
- Yom HaShoah, full name Yom HaZikaron laShoah ve-laG'vurah, Holocaust and Heroism Remembrance Day
- Yom Hazikaron Day of Remembrance for the Fallen Soldier
- Yom Yerushalayim Jerusalem Day
- The Day of the Lord Events of the end times.
- Young Earth creationism Yom is 24 hours
- Gap creationism Yom is 24 hours, but there are gaps of time.
- Old Earth creationism Yom is time span.
- Evolutionary creationism (or Theistic evolution, making theory of evolution and Bible compatible): the literal interpretation of Yom not as crucial.
- Biblical Hebrew has a very small number of words, about 8,000, with 1,700 of those words used only once. Modern Hebrew with about same alphabet has about 100,000 words. For comparison modern English has over 450,000 words. With Spanish having just over 175,000 words. Standard English dictionaries typically have about 200,000 words, comparable Spanish dictionaries have about 80,000 words.
- Yom is also apparently accepted as a scrabble word with no definition.
- Lexiconcordance.com Yom hebrew#3117
- A Social History of Hebrew: Its Origins Through the Rabbinic Period, page 10, By William M. Schniedewind
- An Introduction to Biblical Hebrew Syntax, page 48, By Bruce K. Waltke, Michael Patrick O'Connor
- Strong's Hebrew Lexicon, yom, #3117.
- The Hebrew Word “Yom” Used with a Number in Genesis 1, What does “yom” mean in Genesis 1?, by Rodney Whitefield, Ph.D. 12 June 2006
- jewfaq.org, A Gentile's Guide to the Jewish Holidays
- Biblical Words and Their Meaning: An Introduction to Lexical Semantics, By Moisés Silva
- Passport Israel 3rd Ed., page 12, By Donna Rosenthal
- http://hypertextbook.com/facts/2001/JohnnyLing.shtml Number of Words in the English Language
- Webster's Third New International Dictionary of the English Language, Unabridged, page 5a, edited by Philip Babcock Gove, Merriam-Webster, Inc
- Concise Oxford Spanish Dictionary
- oxforddictionaries.com, How many words are there in the English language?
- Merriam-Webster's Spanish-English Dictionary, byMerriam-Webster, 80,000 entries
- Gleason L. Archer, Encyclopedia of Bible Difficulties, pages 51-53, 60–61, Baker 1982
- Norman L. Geisler, Baker Encyclopedia of Christian Apologetics, page 271, Zondervan 1999