Tertiary Meaning

"Beſides theſe primordial mountains, M. [P[eter] S[imon]] Pallas maintains, that there are others of a more recent origin. These he calls ſecondary and tertiary: […] the latter ariſe from the wrecks and contents of the ſea, raiſed and tranſported by volcanic eruptions and conſequent inundations." — 1780, “Art. XIV. Observations sur la Formation des Montagnes et les Changemens arrivés au Globe, &c.—Observations on the Formation of Mountains, and the Changes and Revolutions which have taken place in our Globe; composed with a View to the Natural History of M. de Buffon. By P. S. Pallas, Member of the Academy of Petersburg, in 12mo. pp. 90. Price 24 Livres. Printed at Paris. 1779.”, in The Monthly Review; or, Literary Journal, volume LXI, London: Printed for R. Griffiths, and sold by T. Becket, corner of the Adelphi, Strand, →OCLC, page 550:

"If artistic and industrial education, if Mechanics Institutions, Colleges, and all the establishments of secondary and tertiary education, are to be taken under Government management, the objections stated above would be greatly aggravated and multiplied." — 1854 May, “Reviews and Literary Notices: Education, Best Promoted by Perfect Freedom, Not by State Endowments. With Official Returns of Education. By Edward Baines. 8vo. 47pp. John Snow.”, in The Wesleyan Methodist Association Magazine, volume XVII, London: Association Book-room, 5, Horseshoe Court, Ludgate Hill, →OCLC, page 231:

"If, on the other hand, we remember that a tertiary monoamine, such as must be formed by the final methylation of the ammonia fragment in aniline when submitted to the action of an alcohol chloride, is invariably converted into an ammonium compound it must appear rather strange that in the process above alluded to only tertiary, and never any quartery bases are observed." — 1873 January 3, A[ugust] W[ilhelm von] Hofmann, “Synthesis of Aromatic Monoamines by Intramolecular Atomic Interchange”, in William Crookes, editor, The Chemical News and Journal of Physical Science: A Journal of Practical Chemistry in All Its Applications to Pharmacy, Arts, and Manufactures, volume XXVII, number 684, London: Henry Gillman, Boy Court, Ludgate Hill, E.C., →OCLC, page 1, column 1:

"The primary, secondary, and tertiary wing feathers (remiges) of adult mourning doves are shed and replaced yearly in an orderly sequence, so flight is possible during molt. […] Little is known about the shedding sequence of the secondary or tertiary feathers or the related coverts. If it is similar to that of passerines, however, loss of the outermost tertiary feather occurs coincident with loss of the fifth or sixth primary[…]. The molt then would continue sequentially until the last or innermost tertiary was shed and replaced." — 1993, Ralph E. Mirarchi, “Growth, Maturation, and Molt”, in Thomas S. Baskett, Mark W. Sayre, Roy E. Tomlinson, Ralph E. Mirarchi, editors, Ecology and Management of the Mourning Dove (Wildlife Management Institute Book), Harrisburg, Pa.: Stackpole Books, →ISBN, page 141:

"The primary rhizomes usually die during the growing season. The tertiaries and secondaries, however, live through the winter and become primary rhizomes the following year." — 1958 August, Ellis W. Hauser, H. Fred Arle, “Growth Habits”, in Johnson Grass as a Weed (Farmers’ Bulletin; no. 1537), Washington, D.C.: United States Department of Agriculture, →OCLC, page 4, column2: