+digit+, 5/30; +digitalle+, 33/24; a number less than ten, represented by one of the nine Arabic numerals. [[written digitall{e}]] +dimydicion+, 7/23; the operation of dividing a number by two. Halving. [[written dimydicioñ]] +duccioun+, multiplication, 43/9. [[written duccio{u}n]] +duplacion+, 7/23, 14/15; the operation of multiplying a number by two. Doubling. [[written duplacioñ or duplacioɳ with fancy “n”]] +i-mediet+ = halved, 19/23. +intercise+ = broken, 46/2; intercise Progression is the name given to either of the Progressions 1, 3, 5, 7, etc.; 2, 4, 6, 8, etc., in which the common difference is 2. [[written int{er}cise]] +lede into+, multiply by, 47/18. [[words always separated, as “lede ... into”]] +lyneal nombre+, 46/14; a number such as that which expresses the measure of the length of a line, and therefore is not _necessarily_ the product of two or more numbers (_vide_ Superficial, Solid). This appears to be the meaning of the phrase as used in _The Art of Nombryng_. It is possible that the numbers so designated are the prime numbers, that is, numbers not divisible by any other number except themselves and unity, but it is not clear that this limitation is intended. +mediacioun+, 16/36, 38/16; dividing by two (see also +dimydicion+). [[written mediacioɳ with fancy “n”, generally without “u”]] +medlede nombre+, 34/1; a number formed of a multiple of ten and a digit (_vide_ componede, composyt). [[written medled{e} ...]] +medye+, 17/8, to halve; +mediete+, halved, 17/30; +ymedit+, 20/9. +naturelle progressioun+, 45/22; the series of numbers 1, 2, 3, etc. [[written naturell{e} p{ro}gressio{u}n]] +produccioun+, multiplication, 50/11. [[written produccio{u}n]] +quadrat nombre+, 46/12; a number formed by multiplying a given number by itself, _e.g._ 9 = 3 × 3, a square. +rote+, 7/25; +roote+, 47/11; root. The roots of squares and cubes are the numbers from which the squares and cubes are derived by multiplication into themselves. +significatyf+, significant, 5/14; The significant figures of a number are, strictly speaking, those other than zero, _e.g._ in 3 6 5 0 4 0 0, the significant figures are 3, 6, 5, 4. Modern usage, however, regards all figures between the two extreme significant figures as significant, even when some are zero. Thus, in the above example, 3 6 5 0 4 are considered significant. +solide nombre+, 46/37; a number which is the product of three other numbers, _e.g._ 66 = 11 × 2 × 3. [[usually written solid{e}]] +superficial nombre+, 46/18; a number which is the product of two other numbers, _e.g._ 6 = 2 × 3. [[written sup{er}ficial or sup{er}ficiall{e}]] +ternary+, consisting of three digits, 51/7. [[written t{er}nary]] +vnder double+, a digit which has been doubled, 48/3.