actino-


Also found in: Medical.

actino-

or actin-
pref.
1. Radial in form: actinoid.
2. Actinic radiation: actinometer.

[From Greek aktīs, aktīn-, ray; see nekw-t- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

actino-

or before a vowel

actin-

combining form
1. indicating a radial structure: actinomorphic.
2. indicating radioactivity or radiation: actinometer.
[from Greek aktino-, from aktis beam, ray]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

actino-

a combining form with the meaning “ray, beam,” used with the particular senses “radiation” in the physical sciences (actinometer) and “having raylike structures,” “radiate in form” in biology (actinomyces).
[< Greek, comb. form representing aktis, genitive aktînos ray, beam; see -o-]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Pelvic abscess Microscopic Yes (10 years) naeslundii observation of the Type: Daikon IUD and culture Shield IUD Sulphur ND Histopathological Yes(15 years) granules; report and culture Type: Lippes Actinomyces loop IUD israelii; actinomycotic pelvic abscess secondary to IUD involving the bladder, sigmoid colon, left ureter, liver, and superior abdominal wall Actinomycotic Abdominal Laparotomy Yes Type: granules, tumour copper IUD tubo- secondary to ovarian colon cancer abscess MSA * ND Histopathological Yes (9 and 3 report years) Type: ND Actino- Bilateral Histopathological No myces sp.
Corolla (3-) 4-5 (8-10)-merous or absent in staminate flowers (Theligonum); aestivation valvate, imbricate or convolute; connate; usually actino-