1. Precambrian

noun. the eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago.

Rhymes with Precambrian Period

• .period
• myriad

2. period

noun. ['ˈpɪriːəd'] an amount of time.

3. period

noun. ['ˈpɪriːəd'] the interval taken to complete one cycle of a regularly repeating phenomenon.

4. period

noun. ['ˈpɪriːəd'] a punctuation mark (.) placed at the end of a declarative sentence to indicate a full stop or after abbreviations.

5. period

noun. ['ˈpɪriːəd'] (ice hockey) one of three divisions into which play is divided in hockey games.

6. period

noun. ['ˈpɪriːəd'] the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause.

7. period

noun. ['ˈpɪriːəd'] the end or completion of something.

8. period

noun. ['ˈpɪriːəd'] a unit of geological time during which a system of rocks formed.