entrold, another reading introld /in-trōldˈ/ (Spenser; appar a pap of unknown meaning) enrolled, in the sense of encircled, has been conjectured.

• seroons
• seropositive
• seropositivity
• seropurulent
• seropus
• seropuses
• serosa
• serosae
• serosal
• serosas
• serosities
• serosity
• serotaxonomies
• serotaxonomy
• serotherapies
• serotherapy
• serotinal
• serotine
• serotine bat
• serotines
• serotinous
• serotonin
• serotonins
• serotype
• serotyped