lacto

See also: lactó and lacto-

Latin

Etymology 1

From lac +‎ -ō.

Verb

lactō (present infinitive lactāre, perfect active lactāvī, supine lactātum); first conjugation

  1. to contain or give milk, suckle
  2. to suck milk from the breast
  3. (impersonal) to be full of milk
    • 86 CE – 103 CE, Martial, Epigrammata I.42:
      rustica lactantes nec misit Sassina metas
      nec de Picenis venit oliva cadis:
      nor did the rustic basket supply its milky [lit: being-full-of-milk] cheeses,
      or the olive emerge from its Picenian jar
Conjugation
   Conjugation of lactō (first conjugation)
indicative singular plural
first second third first second third
active present lactō lactās lactat lactāmus lactātis lactant
imperfect lactābam lactābās lactābat lactābāmus lactābātis lactābant
future lactābō lactābis lactābit lactābimus lactābitis lactābunt
perfect lactāvī lactāvistī lactāvit lactāvimus lactāvistis lactāvērunt,
lactāvēre
pluperfect lactāveram lactāverās lactāverat lactāverāmus lactāverātis lactāverant
future perfect lactāverō lactāveris lactāverit lactāverimus lactāveritis lactāverint
passive present lactor lactāris,
lactāre		 lactātur lactāmur lactāminī lactantur
imperfect lactābar lactābāris,
lactābāre		 lactābātur lactābāmur lactābāminī lactābantur
future lactābor lactāberis,
lactābere		 lactābitur lactābimur lactābiminī lactābuntur
perfect lactātus + present active indicative of sum
pluperfect lactātus + imperfect active indicative of sum
future perfect lactātus + future active indicative of sum
subjunctive singular plural
first second third first second third
active present lactem lactēs lactet lactēmus lactētis lactent
imperfect lactārem lactārēs lactāret lactārēmus lactārētis lactārent
perfect lactāverim lactāverīs lactāverit lactāverīmus lactāverītis lactāverint
pluperfect lactāvissem lactāvissēs lactāvisset lactāvissēmus lactāvissētis lactāvissent
passive present lacter lactēris,
lactēre		 lactētur lactēmur lactēminī lactentur
imperfect lactārer lactārēris,
lactārēre		 lactārētur lactārēmur lactārēminī lactārentur
perfect lactātus + present active subjunctive of sum
pluperfect lactātus + imperfect active subjunctive of sum
imperative singular plural
first second third first second third
active present — lactā — — lactāte —
future — lactātō lactātō — lactātōte lactantō
passive present — lactāre — — lactāminī —
future — lactātor lactātor — — lactantor
non-finite forms active passive
present perfect future present perfect future
infinitives lactāre lactāvisse lactātūrum esse lactārī lactātum esse lactātum īrī
participles lactāns — lactātūrus — lactātus lactandus
verbal nouns gerund supine
genitive dative accusative ablative accusative ablative
lactandī lactandō lactandum lactandō lactātum lactātū
Descendants
  • → English: lactate
  • French: lacter
  • Friulian: latâ
  • Italian: lattare
  • Spanish: lactar

Etymology 2

From laciō (“entice, allure”) +‎ -tō.

Verb

lactō (present infinitive lactāre, perfect active lactāvī, supine lactātum); first conjugation

  1. to wheedle, flatter, deceive with flattery
Conjugation
   Conjugation of lactō (first conjugation)
indicative singular plural
first second third first second third
active present lactō lactās lactat lactāmus lactātis lactant
imperfect lactābam lactābās lactābat lactābāmus lactābātis lactābant
future lactābō lactābis lactābit lactābimus lactābitis lactābunt
perfect lactāvī lactāvistī lactāvit lactāvimus lactāvistis lactāvērunt,
lactāvēre
pluperfect lactāveram lactāverās lactāverat lactāverāmus lactāverātis lactāverant
future perfect lactāverō lactāveris lactāverit lactāverimus lactāveritis lactāverint
passive present lactor lactāris,
lactāre		 lactātur lactāmur lactāminī lactantur
imperfect lactābar lactābāris,
lactābāre		 lactābātur lactābāmur lactābāminī lactābantur
future lactābor lactāberis,
lactābere		 lactābitur lactābimur lactābiminī lactābuntur
perfect lactātus + present active indicative of sum
pluperfect lactātus + imperfect active indicative of sum
future perfect lactātus + future active indicative of sum
subjunctive singular plural
first second third first second third
active present lactem lactēs lactet lactēmus lactētis lactent
imperfect lactārem lactārēs lactāret lactārēmus lactārētis lactārent
perfect lactāverim lactāverīs lactāverit lactāverīmus lactāverītis lactāverint
pluperfect lactāvissem lactāvissēs lactāvisset lactāvissēmus lactāvissētis lactāvissent
passive present lacter lactēris,
lactēre		 lactētur lactēmur lactēminī lactentur
imperfect lactārer lactārēris,
lactārēre		 lactārētur lactārēmur lactārēminī lactārentur
perfect lactātus + present active subjunctive of sum
pluperfect lactātus + imperfect active subjunctive of sum
imperative singular plural
first second third first second third
active present — lactā — — lactāte —
future — lactātō lactātō — lactātōte lactantō
passive present — lactāre — — lactāminī —
future — lactātor lactātor — — lactantor
non-finite forms active passive
present perfect future present perfect future
infinitives lactāre lactāvisse lactātūrum esse lactārī lactātum esse lactātum īrī
participles lactāns — lactātūrus — lactātus lactandus
verbal nouns gerund supine
genitive dative accusative ablative accusative ablative
lactandī lactandō lactandum lactandō lactātum lactātū

References
  • “lacto”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • “lacto”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • lacto in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.

Portuguese

Verb

lacto

  1. first-person singular present indicative of lactar

Spanish

Verb

lacto

  1. first-person singular present indicative of lactar
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