Glossary (L - O)

LACERATION

A tear.

LANUGO

A covering of soft, fine hair on the newborn.

LIGHTENING (also called engagement or dropping)

This refers to when a baby's head settles into the mother’s pelvic cavity. This can happen from 2 - 4 weeks before labor starts, especially for first time mothers.

LINEA NIGRA

A darkened line that appears on the abdomen during pregnancy.

LOCHIA

The vaginal discharge present after delivery.

MACROSOMIA

Excessive size.

MALPRESENTATION

Malpresentation is the term health professionals use when a baby is in the wrong position for birth.

MASTITIS

Inflammation of the breast, which is usually caused by a bacterial infection.

MECONIUM

The dark green, sticky bowel contents of the baby at birth.

MECONIUM ASPIRATION

The breathing of meconium-contaminated fluid by the baby at birth.

MELANOCYTE

A hormone that coordinates pigmentation of the skin, eyes, and hair.

MOLDING

The shaping of the baby's head to adjust itself to the size and shape of the birth canal.

MORNING SICKNESS

Nausea and vomiting during pregnancy.

MSAFP (also known as Triple Screen, Triple Panel, or Maternal Serum Screen)

A blood test that is usually offered to a mother between 15 and 20 weeks of pregnancy to screen for an increased risk of particular birth defects (neural tube defects, Down Syndrome).

MUCOUS PLUG

A plug of thick mucous, which closes the cervical canal during pregnancy.

NEURAL TUBE DEFECTS (NTD)

An abnormality of the spinal cord or brain.

NON-STRESS TEST (NST)

A test of fetal well being in which the effect of movement on the heart rate is assessed.

OCCIPUT

The back part of the baby's head that is used for a reference point in determining the position of the baby in utero.

OVARY

The female reproductive organ that produces the ovum, progesterone and estrogen.

OVULATE

The release of an egg, or ovum from the ovary.

OXYTOCIN

A substance produced in the brain that causes contractions of the uterus for labor, and causes the breasts to release milk.

Glossary Index

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