mother-to-be

• mother to be

From mother +‎ -to-be.

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mother-to-be (plural mothers-to-be)

1. A pregnant woman, especially one expecting her first child.
   • 2000, Allison England, Aromatherapy and Massage for Mother and Baby, Healing Arts Press, published 2000, →ISBN, page 52:

     The ideal position for a back massage for the mother-to-be is to sit astride a chair supported by cushions.

2. A woman whose partner is pregnant.
   • 2010, Amie Klempnauer Miller, She Looks Just Like You: A Memoir of (Nonbiological Lesbian) Motherhood, Beacon Press, published 2010, →ISBN, page 55:

     I don't know how other lesbian, nonbiological mothers-to-be, who tried to get pregnant and could not, might experience their partners' pregnancy.

• be mother