Periodicity 

The pains, cramps, and aches associated with a woman's menstrual cycle.

She laid on the couch, complaining about her periodicity.

Sometimes periodicity is so bad, one might not go into school or work that day.

Periodicity by Theotherdudeyouknow December 13, 2012

periodically 

A word you say when you want to sound smart and don't know what to say

We have to wait for the bus for a long periodically time. The buses are nasty

periodically by so_smart101 February 3, 2015

periodisiac 

A person who is obcessed with using periods in Instant Messages. Typically uses improper grammar with the only punctuation being periods. In some cases, the periods come between words, as a comma would.

Periodisiac Example 1: "dang. that was awesome. wow."

Periodisiac Example 2: "lol..haha..awesome.."

periodisiac by MCV August 18, 2006

periodical boobs 

The slight swelling and sensitivity of the breasts which a woman experiences for a few days, just before having her menstruation.

The word "periodical" refers to both the cause of the increase in size and the short duration.
As opposed to "major boobage", the effect is minor and temporary.

Man: Wow! Your breasts have really gotten bigger! Did you get implants?
Woman: No, they are only periodical boobs. They'll be back to normal in a few days.

periodical boobs by akalisa April 22, 2010

Perioding

Verb:Per-i-od-ing

An act of canceling any parties or meetings for 3-4 days because of the awful cramps and pain in your crotch that midol cant help.

Amy:Hey are you still going to the connect party tomorrow

Girl:No...i just started my period today so tomorrow
im perioding...probably for the next 3 days...

Amy :.Why dont u just take some midol your be fine

Girl :MOOD SWING...curses out amy

Amy : Damn i didnt know it was that bad...i hate perioding...

Perioding by =N' November 5, 2009

periodicals 

magazines or light reading

street newstands often sell periodicals

periodicals by Potipher the Prophet April 6, 2005

periodism 

a newly made religion where you emphasize the statement of ‘period’ when something is accurate or if you strongly agree with a phrase or action

-‘Frank Ocean is gonna headline Coachella’

~ ‘periodism’

periodism by periodism May 6, 2020