accessĭo (noun F) : accedo
* A going or coming to or near, an approach.
* In gen.: quid tibi in concilium huc accessio est?why comest thou hither?Plaut. Trin. 3, 2, 86; cf.: quid tibi ad hasce accessio est aedīs prope?id. Truc. 2, 2, 3; Cic. Univ. 12: ut magnas accessiones fecerint in operibus expugnandis,sallies,Caes. B. Alex. 22: suo labore suisque accessionibus,i. e. by his labor of calling on people, by his visits,Cic. Verr. 2, 2, 53 fin.
* In part.
* In medicine, t. t., the access, attack, or paroxysm of a disease, Cels. 2, 12; 3, 3 sq.; Sen. Ep. 85, 12; id. N. Q. 6, 18, 6; Suet. Vesp. 23 al.
* A coming to in the way of augmentation, an increase, addition.
* In abstracto: paucorum annorum,Cic. Lael. 3, 7: pecuniae,Nep. Att. 14, 2: fortunae et dignitatis,Cic. Fam. 2, 1; 7, 6; 10, 9; id. Rep. 2, 21: odii,Caes. B. Alex. 48: dignitatis,Vell. 2, 130 fin.
* In rhetor., an addition that makes a definition complete: nisi adhiberet illam magnam accessionem,Cic. Ac. 2, 35, 112; so id. Fin. 2, 13.
* The addition to every kind of fee or tax (opp. decessio), Cato R. R. 144: decumae,Cic. Rab. 11; so Cic. Verr. 2, 3, 33, § 116 al.

s. TLL