concussionaladj.
/kənˈkʌʃn̩(ə)l/, /kəŋˈkʌʃn̩(ə)l/, /kənˈkʌʃən(ə)l/, /kəŋˈkʌʃən(ə)l/, U.S. /kənˈkəʃ(ə)nəl/ Of the nature of concussion (in various senses); caused by concussion.
ΚΠ
1825 Philos. Mag. 66 45 In order to prevent a concussional motion,..the clock-work was made without the usual pendulum, or balance.
1847 Edinb. New Philos. Jrnl. 42 206 The structure of the tympanum gives it power to regulate the force of concussional impressions.
1912 Daily Northwestern (Oshkosh, Wisconsin) 12 Sept. 5/1 (advt.) All concussional forces land at the foundation [of the spine].
1921 Times 14 May 4/4 Shock neurosis or concussional neurosis was the scientific term for what was popularly but very ignorantly called shell-shock.
2002 Physician & Sportsmedicine (Nexis) Aug. 43 Numerous reports describe recurrent concussional symptoms with exertion.
This is a new entry (OED Third Edition, June 2011; most recently modified version published online March 2022).
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adj.1825