laminaria

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lam·i·na·ri·a

(lam'i-nā'rē-ă),
Sterile rod made of kelp (genus Laminaria) that is hydrophilic, and, when placed in the cervical canal, absorbs moisture, swells, and gradually dilates the cervix.
[L. lamina, a blade]
Farlex Partner Medical Dictionary © Farlex 2012

laminaria

(lăm′ə-nâr′ē-ə)
n.
1. Any of various kelps of the genera Laminaria and Saccharina of temperate and arctic waters, used commercially in foodstuffs, dietary supplements, and medicinal products.
2. A small rod formed of dehydrated laminaria tissue, applied to the cervical os to stimulate dilation.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

Laminaria

A medical product made from a certain type of seaweed that is physically placed near the cervix to cause it to dilate.
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.