[26] What on that occasion is one-pointedness of mind (cittass'ekaggatā)?
That which on that occasion is stability (ṭhiti) of the mind (citta), steadfastness (saṇṭhiti), settledness (avaṭṭhiti), non-wavering (avisāhāra), non-distraction (avikkhepa), the state of unwavering mentality (avisāhaṭamānasatā), calm (samatha), the faculty of concentration (samādhindriya), the power of concentration (samādhibala), right concentration (sammāsamādhi) — this on that occasion is one-pointedness of mind.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.