It's called menstruating, or having a period.    From Wordnik.com.  [Chattanooga Pulse] Reference

If women lose too much body fat, they cease menstruating.    From Wordnik.com.  [The Right To Expect? The Demands & Disappointments of Infertility] Reference

And half the women in the experiment stopped menstruating.    From Wordnik.com.  [Food For Thought: Meat-Based Diet Made Us Smarter] Reference

I asked shyly, clumsily explaining that I was menstruating.    From Wordnik.com.  [On Pesach Eve: The Muslim and Her Inner Jew] Reference

"You're embarrassed someone will know you're menstruating?".    From Wordnik.com.  [Susan Kim: Talking About Menstruation] Reference

And when the vaccine wore off, they began menstruating again.    From Wordnik.com.  [Contraception, Jumbo-Style] Reference

When you're menstruating lightly, you want "some protection.".    From Wordnik.com.  [Patrick Borelli: Looks Like Someone Isn't So Bulletproof] Reference

But she stopped him because she was menstruating and he did not.    From Wordnik.com.  [New Hillary Ad Focuses On Emotion, Passion] Reference

Blockage may also be caused by material used by menstruating women.    From Wordnik.com.  [Chapter 5] Reference

Neither one of us were at an age where we should have been menstruating.    From Wordnik.com.  [CNN Transcript Sep 4, 2003] Reference

Afraid you'll randomly start menstruating in your light-colored dress: 8.    From Wordnik.com.  [Prom stress.] Reference

The Quran declares that menstruating women "are a hurt and a pollution.".    From Wordnik.com.  [Elizabeth Scharpf and Rachel Kauder Nalebuff: When a Period Ends More Than A Sentence] Reference

The discovery was like testing pregnant or menstruating for the first time.    From Wordnik.com.  [The Gherkin] Reference

Without toilets, girls often drop out of school, especially when menstruating.    From Wordnik.com.  [Jan Eliasson: The Neglected Development Goal] Reference

But the truth is that no one using oral contraception is actually "menstruating.".    From Wordnik.com.  [Farewell to 'The Curse'?] Reference

Just don't exercise so much that you stop menstruating, which happens to some athletes.    From Wordnik.com.  [You Can Prevent Osteoporosis] Reference

“A menstruating woman,” said Mahnmut, fighting the wheel to port now, leaning into it.    From Wordnik.com.  [Ilium]

In general, we women are typically shy about non-intimates knowing when we are menstruating.    From Wordnik.com.  [Annelle Sheline: A Female Perspective on Ramadan in Cairo] Reference

This explains why some girls pass the usual age of puberty and show no signs of menstruating.    From Wordnik.com.  [The Eugenic Marriage, Vol 2 (of 4) A Personal Guide to the New Science of Better Living and Better Babies] Reference

If Huck is so intent on living Biblically, he should avoid all contact with menstruating women.    From Wordnik.com.  [Huckabee Adviser Clarifies Remark About Homosexuality And Necrophilia: They're Both "Aberrant Behavior," But They're At "Opposite Ends Of The Spectrum"] Reference

She was regularly menstruating, so Aelia said, and the budding breasts beneath her plain gown confirmed.    From Wordnik.com.  [The Grass Crown]

 Having a paper with my name on it, that someone cheated on, made me madder than a menstruating badger.    From Wordnik.com.  [Dudemeister Gets An A] Reference

Some women may stop menstruating for a time or permanently; women over 40 may undergo premature menopause.    From Wordnik.com.  [Cutting Back] Reference

Now 19 and the mother of two, Consuelo thinks girls should get Norplant as soon as they start menstruating.    From Wordnik.com.  [The Norplant Debate] Reference

It ` s not uncommon for girls not to come to their mother and tell them when they have started menstruating.    From Wordnik.com.  [CNN Transcript Apr 11, 2005] Reference

Guess what happens when two girls are menstruating and one of them hooks up with a guy that the other one likes?.    From Wordnik.com.  [Save it for your mama.] Reference

Oh, yeah, if you're ever planning to wear a corset, you might want to wait till after you've stopped menstruating.    From Wordnik.com.  [luvabeans Diary Entry] Reference

Root decoction taken as a prophylactic against elephantiasis believed to be caused by menstruating women (Swahili).    From Wordnik.com.  [Chapter 7] Reference

Her mother, Edda Mellas, told NEWSWEEK that she was menstruating, though neither scenario was presented to the jury.    From Wordnik.com.  [The Italian Job] Reference

Before menstruating, the examination is more difficult because the breasts are often more tender and slightly swollen.    From Wordnik.com.  [Chapter 22] Reference

Once they begin menstruating, and especially when they are pregnant, they need much more iron in their diets than men do.    From Wordnik.com.  [Chapter 4] Reference

Women who don't have enough stored energy to sustain a pregnancy often have trouble ovulating or stop menstruating altogether.    From Wordnik.com.  [Fat, Carbs and the Science of Conception] Reference

Women who are close to menopause but still menstruating can take low-dose oral contraceptives to even out fluctuating hormones.    From Wordnik.com.  [Her Body: Help for Hot Flashes] Reference

They car-tied him into the "birthing shed" where Vicki stayed while she was menstruating, cleansed his body and covered it with a sheet.    From Wordnik.com.  ['Every Knee Shall Bow'] Reference

In general, it may be said that the woman's menstruating period, during which she is able to have children, lasts about thirty-five years.    From Wordnik.com.  [Woman Her Sex and Love Life] Reference