Use 'placental' when discussing pregnancy or fetal development in medical or biological terms.

Medical Context

'Placental' is a technical term often used by healthcare providers or scientists.

Technical Usage

'Placental' refers specifically to something concerning the function or structure of the placenta.

Specific Function

In zoology, 'placental' is used to categorize mammals that have placentas, unlike marsupials.

Zoological Term

Use 'placental' to talk about biological differences in mammalian reproductive strategies.

Biological Classification

 You can prove it just as easily. You just need to look at your bellybutton that you share with other placental mammals, or your backbone that you share with other vertebrates, or your DNA that you share with all other life on earth. Those traits didn't pop up in humans.

Four billion years of...

 way art how fantastic was that that was alive ladies gentlemen I initiate there you can see she's busy licking her she will lick the baby get all of that placental juice and fluid off of her it's also important because the the

Safari Live - Day 121 PIPE...

 Whether placental, marsupial, or monotreme, each of these creatures and its unique birthing methods, however bizarre, have succeeded for many millennia in bringing new life and diversity into the mammal kingdom.