indentationn.
/ɪndɛnˈteɪʃən/ I. Senses from indent v.1
1. The action of indenting; the condition of being indented or having the edge cut into tooth-like notches or angular incisions; denticulation; toothing.
ΘΚΠ
the world > space > shape > unevenness > condition or fact of receding > condition or action of indentation of edge > [noun]
indentingc1386
indentment1672
indenture1672
indention1763
indentation1836
lipping1867
1836 Penny Cycl. V. 247/1 The form of leaves..margin, the manner of their indentation, and the nature of the leaf~stalk.
1858 G. Glenny Gardener's Every-day Bk. (new ed.) 65/2 If the edge be smooth, with no indentation, and pefectly circular.
1877 F. G. Heath Fern World 22 The indentation assuming various shapes, often being deeply incised.
2. with an and plural. A cut, notch, or angular incision in the margin of anything; a deep recess in a coastline, or the like; a series of incisions; a zigzag moulding, etc.
ΘΚΠ
the world > space > shape > unevenness > condition or fact of receding > condition or action of indentation of edge > [noun] > an indentation in the edge
dentinga1425
dent1552
indent1598
insection1653
denture1685
indentationa1728
a1728 J. Woodward Attempt Nat. Hist. Fossils Eng. (1729) 50 The Margins..do not terminate in a streight line, but are indented; each Indentation being continued in a small Ridge across the Line to the indentation that answers it on the opposite Margin.
1796 J. Morse Amer. Universal Geogr. (new ed.) II. 101 The opposite Welsh coast is broken by various bays and indentations.
1806 Med. & Physical Jrnl. 15 69 Leaves oblong, on short leaf-stalks, blunt, wing cleft, with indentations.
1853 E. K. Kane U.S. Grinnell Exped. (1856) xxii. 170 Captain Austin..entered the same little indentation in which five of us were moored before.
a1862 H. T. Buckle Misc. Wks. (1872) I. 302 The Greek coast is full of indentations.
3. Printing. = indention n. 2.
ΘΚΠ
society > communication > printing > printed matter > arrangement or appearance of printed matter > [noun] > indentation
indention1824
indentation1864
insetting1867
indent1884
1864 Webster's Amer. Dict. Eng. Lang. (at cited word) Common indentation..hanging indentation.
1884 J. Southward Pract. Printing 86 The first line of the paragraph..is shorter than the two following, there being a widespace at the beginning of it. This is called an indentation.
II. Sense from indent v.2
4. The action of impressing so as to form a dent or dint; the dent, hollow, or depression thus formed; any deep and decided depression in a surface.
ΘΚΠ
the world > space > shape > unevenness > condition or fact of receding > [noun] > action of making indentation
dentinga1398
indenting1580
indentation1847
the world > space > shape > unevenness > condition or fact of receding > [noun] > action of making indentation > an indentation on a surface
hollowc897
printa1387
impression1398
puncha1430
dent1565
dint1590
dinge1611
doke1615
impressurea1616
depressure1626
depression1665
dawk1678
swage1680
indent1690
sinking1712
dunkle1788
indenture1793
delve1811
subsidation1838
indention1839
recess1839
indentation1847
incavation1852
deepening1859
sink1875
malleation1881
ding1922
1847 G. P. R. James Convict ii On the summit of one of the most elevated points..there was a little indentation.
1861 Times 11 July Injurious compression of a soft, moist soil, by the indentation of its wheels.
1880 H. C. Bastian Brain 115 The extent of its surface is further increased by the existence of numerous superficial folds or indentations.
Compounds
Special combinations:
indentation hardness n. hardness as determined by one of the indentation tests.
ΘΚΠ
the world > matter > constitution of matter > hardness > [noun] > specific
red hardness1907
indentation hardness1918
microhardness1921
Shore hardness1937
1918 Inst. Mech. Engineers: Proc. Oct.–Dec. 487 Researches on indentation hardness.
1956 B. W. Mott Micro-indentation Hardness Testing i. 9 The general definition of indentation hardness..is the ratio of the load applied to the surface area of the indentation.
1968 D. A. Smith Addition Polymers x. 447 The testing of fabricated polymer components..may include evaluation of tensile stress-strain and flexural properties.., indentation hardness, and the examination of the effects of temperature on rigidity.
indentation test n. any of various tests for determining the hardness of a solid by making an indentation in a sample under standard conditions and measuring either its size or the distance travelled by the indenter.
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the world > matter > chemistry > chemical tests > [noun] > types
field trial1817
spot test1872
indentation test1897
spot testing1900
reductase test1910
Scoville test1921
1897 Minutes Proc. Inst. Civil Engineers 139 334 (heading) A new indentation test for determining the hardness of metals.
1956 B. W. Mott Micro-indentation Hardness Testing i. 2 (1) Static indentation test: A steady load is applied to an indenter..and the hardness is calculated from the area or depth of indentation produced. (2) Dynamic indentation test: A ball, cone or a number of small spheres is allowed to fall from a definite height and the hardness number is obtained from the dimensions of the indentation and the energy of the impact.
This entry has not yet been fully updated (first published 1900; most recently modified version published online March 2022).
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n.a1728