So as to form an oblong; with an elongated form in the manner of an oblong.
Origin
Mid 17th century; earliest use found in John Bulwer (bap. 1606, d. 1656), medical practitioner and writer on deafness and on gesture. From oblong + -ly.
Definition of oblongly in US English:
oblongly
adverbˈɒblɒŋli
Botany rare
So as to form an oblong; with an elongated form in the manner of an oblong.
Origin
Mid 17th century; earliest use found in John Bulwer (bap. 1606, d. 1656), medical practitioner and writer on deafness and on gesture. From oblong + -ly.