per·i·car·di·um 
(pĕr′ĭ-kärdē-əm)
(pĕr′ĭ-kärdē-əm)n. pl. per·i·car·di·a (-dē-ə)
The membranous sac filled with serous fluid that encloses the heart and the roots of the aorta and other large blood vessels.
[New Latin, from Greek perikardion, from perikardios, around the heart : peri-, peri- + kardiā, heart; see kerd- in the Appendix of Indo-European roots.]
per′i·cardi·al (-dē-əl), per′i·cardi·ac′ (-dē-ăk′) adj.
- Indo-European root: kerə-
- Indo-European root: kes-
- Indo-European root: keuə-
- Indo-European root: klei-
- Indo-European root: kleu-
- Indo-European root: ko-
- Indo-European root: kob-
- Indo-European root: kom
- Indo-European root: konk-
- Indo-European root: koro-
- Indo-European root: kost-
- Indo-European root: kous-
- Indo-European root: krei-
- Indo-European root: kreus-
- Indo-European root: kreuə-
- Indo-European root: ksun
- Indo-European root: kwe
- Indo-European root: kwei-
- Indo-European root: kwei-
- Indo-European root: kweit-
- Indo-European root: kweiə-
- Indo-European root: kwel-
- Indo-European root: kwel-
- Indo-European root: kwen-
- Indo-European root: kwent(h)-