
1) Around the time of birth
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https://www.crosswordclues.com/clue/perinatal

Relating to the period shortly before and after birth, usually from the twentieth to the twenty-ninth week of gestation to one to four weeks after birth.
Found on
http://sis.nlm.nih.gov/enviro/iupacglossary/glossaryp.html

(peri- + L. natus born) pertaining to or occurring in the period shortly before and after birth; variously defined as beginning with completion of the twentieth to twenty-eighth week of gestation and ending 7 to 28 days after birth.
Found on
http://users.ugent.be/~rvdstich/eugloss/DIC/dictio66.html

Relating to the period just before or just after birth. Usually defined as from 18th week of pregnancy to the end of the first week after birth
Found on
http://www.encyclo.co.uk/local/20415

Perinatal refers to the period just before, during, and immediately after birth.
Found on
http://www.encyclo.co.uk/local/20423

<paediatrics> Pertaining to or occurring in the period shortly before and after birth, variously defined as beginning with completion of the twentieth to twenty eighth week of gestation and ending 7 to 28 days after birth. ... Origin: L. Natus = born ... (18 Nov 1997) ...
Found on
http://www.encyclo.co.uk/local/20973

(per″e-na´tәl) relating to the period shortly before and after birth; from the twentieth to twenty-ninth week of gestation to 1 to 4 weeks after birth.
Found on
http://www.encyclo.co.uk/local/21001

The time before, during, and immediately following birth.
Found on
http://www.encyclo.co.uk/local/22139

the period around the time of birth.
Found on
http://www.encyclo.co.uk/local/22225

The period around birth.
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http://www.encyclo.co.uk/visitor-contributions.php

Type: Term Pronunciation: per′i-nā′tăl Definitions: 1. Occurring during, or pertaining to, the periods before, during, or after the time of birth; before delivery from the 22nd week of gestation through the first 28 days after delivery.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=67078

Perinatal: Pertaining to the period immediately before and after birth. The perinatal period is defined in diverse ways. Depending on the definition, it starts at the 20th to 28th week of gestation and ends 1 to 4 weeks after birth. The word 'perinatal' is a hybrid of the Greek 'peri-' meaning 'around or about' and 'natal' from the Latin 'natus' me...
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http://www.medterms.com/script/main/art.asp?articlekey=7898

Relating to the period around the time of birth.
Found on
http://www.virology.net/ATVGlossary.html

[
adj] - near the nose 2. [adj] - occurring during the period around birth (5 months before and 1 month after)
Found on
http://www.webdictionary.co.uk/definition.php?query=perinatal

perinatal, perinatally 1. Occurring during or pertaining to the phase surrounding the time of birth, from the twentieth week of gestation to the twenty-eighth day of newborn life. 2. A reference to the period immediately before and after birth. The perinatal period is defined in various ways: Depending on the definition, it starts at the 20th to 2...
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http://www.wordinfo.info/words/index/info/view_unit/1370/4

occurring just before or just after birth
Found on
https://www.encyclo.co.uk/local/20875
adjective occurring during the period around birth (5 months before and 1 month after); `perinatal mortality`; `perinatal care`
Found on
https://www.encyclo.co.uk/local/20974

The time before, during, and immediately following birth.
Found on
https://www.whattoexpect.com/pregnancy/glossary
No exact match found.