Origin of ortho
Definition for ortho (2 of 2)
- a combining form used in the name of that acid in a given series of acids that contains the most water (orthoboric acid).Compare meta-, pyro-.
- a combining form used in the names of the salts of these acids: if the acid ends in -ic, the corresponding salt ends in -ate (orthoboric acid (H3BO3) and potassium orthoborate (K3BO3)); if the acid ends in -ous, the corresponding salt ends in -ite (orthoantimonous acid (H3SbO3) and potassium orthoantimonite (K3SbO3)).
Origin of ortho-
Examples from the Web for ortho
Ortho Sol makes precision screws for the most delicate of construction projects: spinal fusion.
Mr. Tal- mage, true to the fawning, cringing spirit of ortho- doxy, lauds the living queen and cruelly maligns the genius dead.The Works of Robert G. Ingersoll, Vol. 5 (of 12)|Robert G. Ingersoll
The influence of position of an alkyl in the aromatic bodies is well shown in ortho-, para- and meta-derivatives.Poisons: Their Effects and Detection|Alexander Wynter Blyth
This change only occurs when the halogen atom is in the ortho- or para- position to the -N2- group.
The ortho- and para-nitro-benzoic acids can be obtained by oxidizing ortho-and para-nitro-cinnamic acids.
The ortho molecules rotate with odd rotational quantum numbers, while the para molecules rotate with even quantum numbers.Unwise Child|Gordon Randall Garrett
British Dictionary definitions for ortho
before a vowel orth-
Word Origin for ortho-
Word Origin and History for ortho
before vowels orth-, word-forming element meaning "straight, upright, rectangular, regular; true, correct, proper," now mostly in scientific and technical compounds, from Greek ortho-, stem of orthos "straight, true, correct, regular," from PIE *eredh- "high" (cf. Sanskrit urdhvah "high, lofty, steep," Latin arduus "high, steep," Old Irish ard "high").